CN116107130B - Quantum enhancement method and device for macroscopic quantum entangled state - Google Patents
Quantum enhancement method and device for macroscopic quantum entangled state Download PDFInfo
- Publication number
- CN116107130B CN116107130B CN202310386052.6A CN202310386052A CN116107130B CN 116107130 B CN116107130 B CN 116107130B CN 202310386052 A CN202310386052 A CN 202310386052A CN 116107130 B CN116107130 B CN 116107130B
- Authority
- CN
- China
- Prior art keywords
- entangled
- light source
- polarized light
- optical component
- quantum
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/35—Non-linear optics
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/28—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising
- G02B27/286—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising for controlling or changing the state of polarisation, e.g. transforming one polarisation state into another
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Abstract
The invention discloses a quantum enhancement method and a quantum enhancement device for macroscopic quantum entanglement, and relates to the technical field of optics; the method comprises the following steps: providing a macro-scale multiphoton multidimensional entangled light; selecting different measuring circuits according to different physical quantities to be measured by taking the macro-scale multiphoton multidimensional entangled light as a light source, wherein the measuring circuits simultaneously provide two configurations of macro-scale multiphoton multidimensional entangled light; and obtaining the observation result of the two configurations when the macro-scale multi-photon multi-dimension entangled light is in the quantum superposition state, and obtaining the inherent quantum property of the macro-photon entangled whole state. The invention also discloses a quantum enhancement device of the macroscopic quantum entangled state. The quantum enhancement method and the device for macroscopic quantum entanglement state provided by the invention can observe the inherent quantum property of macroscopic photon entanglement whole state, thereby greatly improving the measurement precision of frequency and wave number and enabling the measurement precision to be close to the quantum limit of Hessenberg.
Description
Technical Field
The invention relates to the technical field of optics, in particular to a quantum enhancement method and a quantum enhancement device for macroscopic quantum entanglement.
Background
Along with the continuous deep understanding, understanding and researching of the quantum mechanics principle by human beings and the continuous improvement of the observation and regulation capability of a microscopic physical system, a microscopic particle system (such as electrons, photons, cold atoms and the like) is taken as an operation object, and a quantum information technology for acquiring, processing and transmitting information by means of unique physical phenomena such as quantum superposition states, quantum entanglement effects and the like in the microscopic particle system is developed and developed vigorously, so that one of the focus of attention of information communication technology evolution and industry upgrading is formed. The quantum information technology mainly comprises three fields of quantum computing, quantum communication and quantum measurement. The quantum measurement is based on the precise measurement of a microscopic particle system and a quantum state, the execution transformation and information output of the physical quantity of the measured system are completed, and the quantum measurement has obvious advantages in measurement precision, sensitivity, stability and the like compared with the traditional measurement technology.
In the prior art, research on quantum entanglement effect is still at present at a stage that the entangled photon number is several at most tens of hundreds of photons, which can meet the experimental requirement, but for actual quantum computation, quantum communication and quantum measurement, the existing multiphoton entanglement technology cannot actually meet the requirement. In order to solve the technical problem, CN109581656B provides a multiphoton entangled light source, which uses a single-mode laser that outputs two laser beams in two directions to generate multiphoton multidimensional entangled light that can output macroscopic dimensions, and provides preconditions for practical application of macroscopic quantum entangled effect. However, this patent also only provides a generating device of the multi-photon entangled light source, and does not disclose a method of how to obtain intrinsic quantum properties of an overall state by the multi-photon entangled light, so that it is highly desirable to provide a method suitable for applying the multi-photon entangled light to obtain intrinsic quantum properties of an overall state.
Disclosure of Invention
The invention aims to provide a quantum enhancement method and a quantum enhancement device for macroscopic quantum entangled state, which can obtain the inherent quantum property of the whole state of a macroscopic quantum entangled state light source.
The invention is realized by the following technical scheme: the invention provides a quantum enhancement method of macroscopic quantum entanglement, which comprises the following steps:
providing a macro-scale multiphoton multidimensional entangled light;
taking the macro-scale multiphoton multidimensional entangled light as a light source, and selecting different measuring circuits according to different physical quantities to be measured; simultaneously observing quantum states of the two configurations of the macro-scale multi-photon multi-dimension entangled lights, wherein the measurement circuit simultaneously provides the two configurations of the macro-scale multi-photon multi-dimension entangled lights;
and obtaining the observation result of the two configurations when the macro-scale multi-photon multi-dimension entangled light is in the quantum superposition state, and obtaining the inherent quantum property of the macro-photon entangled whole state.
Further, in some embodiments of the present application, the measurement accuracy of the observations is close to the hessian quantum limit; the observation result of the macro-scale multiphoton multidimensional entangled light is enhanced by a factor of approximately 2N compared to that of a single photon; wherein 2N is the number of macroscopic entangled photons.
Further, in some embodiments of the present application, the inherent quantum properties include average lifetime, frequency width, wavenumber width of entangled light; the quantum states are a first quantum state, a second quantum state and a third quantum state;
the first quantum state is expressed by the following formula:
the second quantum state is expressed by the following formula:
the third quantum state is expressed by the following formula:
wherein 2N is the number of entangled photons,
for the first even parity, ++>
Is a second even parity; the total spin angular momentum is 2N ћ, < >>
The total spin angular momentum is 2N ћ, < >>
The total spin angular momentum is-2N ћ. />
For the third even parity, the total spin angular momentum is zero; r is R k For right circular polarization, the spin is 1, and the wave vector K is along the +Z direction; l (L) k For left circular polarization, the spin is-1, and the wave vector K is along the +Z direction; />
For right circular polarization, the spin is 1, and the wave vector K is along the-Z direction;
for left circular polarization, spinFor-1, the wave vector K is in the-Z direction.
The measurement circuit includes a first measurement circuit, a second measurement circuit, and a third measurement circuit.
The first measuring circuit comprises a first multiphoton entangled light source for outputting the macrophoton entangled light in a bidirectional manner, and a first optical component and a second optical component which are respectively arranged at two ends of the first multiphoton entangled light source, wherein the light sources output at two ends of the first multiphoton entangled light source are respectively input into the first coincidence measurement through the first optical component and the second optical component;
The second measuring circuit comprises a second multi-photon entangled light source for outputting the macro-scale multi-photon multidimensional entangled light in a two-way mode, and a third optical component and a fourth optical component which are respectively arranged at two ends of the second multi-photon entangled light source, wherein the light sources output at two ends of the second multi-photon entangled light source are respectively input into the second coincidence measurement through the third optical component and the fourth optical component;
the third measuring circuit comprises a third multi-photon entangled light source for outputting the macro-scale multi-photon multidimensional entangled light in a bidirectional mode, and a fifth optical component and a sixth optical component which are respectively arranged at two ends of the third multi-photon entangled light source, wherein the light sources output at two ends of the third multi-photon entangled light source are respectively input into the third coincidence measurement through the fifth optical component and the sixth optical component.
Further, in some embodiments of the present application, the first optical assembly includes a first linear polarizer and a first 1/4 wave plate; the angle of the first linear polarizer is set to-90 °; the second optical component comprises a second linear polarizer and a second 1/4 wave plate, and the angle of the second linear polarizer is set to be 0 degree; the light source output by one end of the first multiphoton entangled light source sequentially passes through the first linear polarizer, θThe first 1/4 wave plate of = -45 ° emits left circularly polarized light and the left circularly polarized light is input into the first coincidence measurement; the light source output by the other end of the first multi-photon entangled light source sequentially passes through the second linear polarizer,θThe second 1/4 wave plate of 45 degrees outputs right circularly polarized light, and the right circlePolarized light is input into the first coincidence measurement; and/or
The third optical component comprises a third linear polarizer and a third 1/4 wave plate, wherein the angle of the third linear polarizer is set to be 180 degrees; the fourth optical component comprises a fourth linear polarizer and a fourth 1/4 wave plate, wherein the angle of the fourth linear polarizer is set to 90 degrees; the light source output by one end of the second multi-photon entangled light source sequentially passes through the third linear polarizer,θThe third 1/4 wave plate of = -45 ° emits right circularly polarized light and the right circularly polarized light is input into the second coincidence measurement; the light source output by the other end of the second multi-photon entangled light source sequentially passes through the fourth linear polarizer,θThe fourth 1/4 wave plate=225° emits left circularly polarized light, and the left circularly polarized light is input to the second coincidence measurement; and/or
The fifth optical component comprises a fifth polarization splitting prism, a fifth 1/4 wave plate and a sixth 1/4 wave plate; the horizontal linearly polarized light emitted by the fifth polarization beam splitter prism enters θThe fifth 1/4 wave plate with the angle of 45 degrees is characterized in that the vertical linear polarized light emitted by the fifth polarization beam splitting prism is incidentθ-45 ° of the sixth 1/4 wave plate; the sixth optical component comprises a sixth polarization splitting prism, a seventh 1/4 wave plate and an eighth 1/4 wave plate; the horizontally linearly polarized light emitted by the sixth polarization beam splitter prism entersθThe seventh 1/4 wave plate of 45 DEG, the vertical linear polarized light emitted by the sixth polarization splitting prism is incidentθThe eighth 1/4 wave plate=225°; the light source output by one end of the third multi-photon entanglement light source outputs right circularly polarized light through a fifth 1/4 wave plate and inputs the right circularly polarized light to the third coincidence measurement, and the vertically linearly polarized light outputs left circularly polarized light through a sixth 1/4 wave plate and inputs the left circularly polarized light to the third coincidence measurement; and the horizontal linear polarized light emitted by the sixth polarization splitting prism emits right circular polarized light through a seventh 1/4 wave plate and is input into the third coincidence measurement, and the vertical linear polarized light emits left circular polarized light through an eighth 1/4 wave plate and is input into the third coincidence measurement.
Further, in some embodiments of the present application, the third measurement circuit includes a measurement circuit that may also include a fourth multiphoton entangled light source, the seventh optical assembly including a seventh polarizing beam splitter prism, an eighth optical assembly, and a fourth coincidence measurement; a light source output by one end of the fourth multi-photon entanglement light source emits horizontal linearly polarized light and vertical linearly polarized light through the seventh polarization splitting prism, and the horizontal linearly polarized light and the vertical linearly polarized light are input into the fourth coincidence measurement; and a light source output by the other end of the fourth multi-photon entanglement light source emits horizontal linearly polarized light and vertical linearly polarized light through the eighth polarization splitting prism, and the horizontal linearly polarized light and the vertical linearly polarized light are input into the fourth coincidence measurement.
The application also provides a quantum enhancement device of a macroscopic quantum entangled state, which comprises a first multiphoton entangled light source for outputting the macroscopic-scale multiphoton multidimensional entangled light in a bidirectional manner, and a first optical component and a second optical component which are respectively arranged at two ends of the first multiphoton entangled light source, wherein the light sources output at two ends of the first multiphoton entangled light source are respectively input into the first coincidence measurement through the first optical component and the second optical component;
wherein the first optical component comprises a first linear polarizer with an angle of-90 DEG andθ-45 ° of the first 1/4 wave plate; the second optical component comprises a second linear polarizer with an angle set to 0 DEG andθa second 1/4 wave plate=45°; a light source output by one end of the first multi-photon entanglement light source sequentially passes through the first linear polarizer and the first 1/4 wave plate to emit left circularly polarized light, and the left circularly polarized light is input into the first coincidence measurement; and a light source output by the other end of the first multi-photon entanglement light source sequentially passes through the second linear polarizer and the second 1/4 wave plate to emit right circularly polarized light, and the right circularly polarized light is input into the first coincidence measurement.
The application also provides a quantum enhancement device of a macroscopic quantum entangled state, which comprises a second multiphoton entangled light source for outputting macroscopic-scale multiphoton multidimensional entangled light in a two-way manner, and a third optical component and a fourth optical component which are respectively arranged at two ends of the second multiphoton entangled light source, wherein the light sources output at two ends of the second multiphoton entangled light source are respectively input into a second coincidence measurement through the third optical component and the fourth optical component;
The third optical component comprises a third linear polarizer with an angle of 180 DEGθA third 1/4 wave plate of = -45 ° and the fourth optical assembly comprises a fourth linear polarizer with an angle set to 90 ° andθa fourth 1/4 wave plate with the angle of 225 degrees, wherein a light source output by one end of the second multi-photon entanglement light source sequentially passes through the third linear polarizer and the third 1/4 wave plate to emit right circularly polarized light, and the right circularly polarized light is input into the second coincidence measurement; and a light source output by the other end of the second multi-photon entanglement light source sequentially passes through the fourth linear polarizer and the fourth 1/4 wave plate to emit left circularly polarized light, and the four circularly polarized light is input into the second coincidence measurement.
The application also provides a quantum enhancement device of a macroscopic quantum entangled state, which comprises a third multiphoton entangled light source for outputting the macroscopic-scale multiphoton multidimensional entangled light in a bidirectional manner, and a fifth optical component and a sixth optical component which are respectively arranged at two ends of the third multiphoton entangled light source, wherein the light sources output at two ends of the third multiphoton entangled light source are respectively input into the third coincidence measurement through the fifth optical component and the sixth optical component;
the fifth optical component comprises a fifth polarization splitting prism, a fifth 1/4 wave plate and a sixth 1/4 wave plate; the horizontal linearly polarized light emitted by the fifth polarization beam splitter prism enters θThe fifth 1/4 wave plate with the angle of 45 degrees is characterized in that the vertical linear polarized light emitted by the fifth polarization beam splitting prism is incidentθ-45 ° of the sixth 1/4 wave plate; the sixth optical component comprises a sixth polarization splitting prism, a seventh 1/4 wave plate and an eighth 1/4 wave plate; the horizontally linearly polarized light emitted by the sixth polarization beam splitter prism entersθThe seventh 1/4 wave plate of 45 DEG, the vertical linear polarized light emitted by the sixth polarization splitting prism is incidentθThe eighth 1/4 wave plate=225°; the light source output by one end of the multiphoton entangled light source outputs right circularly polarized light through a fifth 1/4 wave plate and outputs the right circularly polarized light through a fifth polarization splitting prism, and the right linearly polarized light is input into the third coincidence measurement and the vertical linearly polarized light passes through a sixth polarization splitting prismThe 1/4 wave plate emits left circularly polarized light and inputs the left circularly polarized light into a third coincidence measurement; and the horizontal linearly polarized light emitted by the sixth polarization splitting prism emits right circularly polarized light through a seventh 1/4 wave plate and is input into the third coincidence measurement, and the vertical linearly polarized light emits left circularly polarized light through an eighth 1/4 wave plate and is input into the third coincidence measurement.
The application also provides a quantum enhancement device of a macroscopic quantum entangled state, which comprises a fourth multiphoton entangled light source for outputting the macroscopic-scale multiphoton multidimensional entangled light in a bidirectional manner, and a seventh optical component and an eighth optical component which are respectively arranged at two ends of the fourth multiphoton entangled light source, wherein the light sources output at two ends of the fourth multiphoton entangled light source are respectively input into the fourth coincidence measurement through the seventh optical component and the eighth optical component;
Wherein the seventh optical component comprises a seventh polarization splitting prism; a light source output by one end of the fourth multi-photon entanglement light source emits horizontal linearly polarized light and vertical linearly polarized light through the seventh polarization splitting prism, and the horizontal linearly polarized light and the vertical linearly polarized light are input into the fourth coincidence measurement; the eighth optical component comprises an eighth polarization splitting prism; and a light source output by one end of the fourth multi-photon entanglement light source emits horizontal linearly polarized light and vertical linearly polarized light through the eighth polarization splitting prism, and the horizontal linearly polarized light and the vertical linearly polarized light are input into the fourth coincidence measurement.
Compared with the prior art, the invention has the following advantages:
the invention provides a quantum enhancement method and a device for macroscopic quantum entangled state, which take macroscopic scale multiphoton multidimensional entangled light as a light source, provide different measuring circuits for different quantum states, observe the macroscopic scale multiphoton multidimensional entangled light in two different configurations at the same time, and when the macroscopic scale multiphoton multidimensional entangled light in two different configurations is in a quantum superposition state at the same time, the quantum entangled state appears, and obtain the measured value of the physical quantity to be measured at the moment, such as the average service life, the frequency width and the wave number width of the macroscopic entangled light, namely the inherent quantum property of the macroscopic scale multiphoton multidimensional entangled whole state. Compared with the measured value of single photon, the quantum property of the macroscopic scale multiphoton multidimensional entangled integral state obtained by the method is enhanced by nearly 2N times (2N is the macroscopic entangled photon number), and the inherent quantum property of the macroscopic photon entangled integral state can be observed, so that the measuring precision of frequency and wave number is greatly improved, and the measuring precision is close to the Hassenberg quantum limit.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a graph of the probability of observing a multiphoton multidimensional entangled state as a whole obtained by an embodiment of a quantum enhancement method for macroscopic quantum entangled states provided herein;
FIG. 2 is a chart of a pattern obtained by a quantum enhancement method embodiment of macroscopic quantum entangled state obtained by the present application after Fourier transform of a probability of observing a multiphoton multidimensional entangled state;
FIG. 3 is a schematic diagram of a first measurement circuit in a quantum enhancement method of macroscopic quantum entanglement provided by the present application;
FIG. 4 is a schematic diagram of a second measurement circuit in a quantum enhancement method of macroscopic quantum entanglement provided by the present application;
FIG. 5 is a schematic diagram of a third measurement circuit in a quantum enhancement method for macroscopic quantum entanglement provided by the present application;
Fig. 6 is a schematic structural diagram of a measurement circuit in a quantum enhancement device of macroscopic quantum entanglement state provided in the present application.
In the figure, 11-first multiphoton entangled light source, 12-first linear polarizer, 13-first 1/4 wave plate, 14-first coincidence measurement, 15-second linear polarizer, 16-second 1/4 wave plate; the system comprises a first multi-photon entanglement light source, a second multi-photon entanglement light source, a third linear polarizer, a third 1/4 wave plate, a fourth linear polarizer and a fourth 1/4 wave plate, wherein the first multi-photon entanglement light source is a first multi-photon entanglement light source, the second multi-photon entanglement light source is a second multi-photon entanglement light source, the third multi-photon entanglement light source is a third multi-photon light source, the third multi-photon entanglement light source is a; 31-third multiphoton entangled light source, 32-fifth polarization beam splitter prism, 33-fifth 1/4 wave plate, 34-sixth 1/4 wave plate, 35-third coincidence measurement, 36-sixth polarization beam splitter prism, 37-seventh 1/4 wave plate, 38-eighth 1/4 wave plate; 41-fourth multiphoton entangled light source, 42-seventh polarization beam splitter prism, 43-fourth coincidence measurement, 44-eighth polarization beam splitter prism.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
It will be understood by those skilled in the art that all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs unless defined otherwise. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless expressly stated otherwise, as understood by those skilled in the art. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. The term "and/or" as used herein includes all or any element and all combination of one or more of the associated listed items.
According to the quantum mechanical measurement inaccuracy relationship, when the photon phase in the equivalent subsystem is completely uncertain, the photon number is completely determined, and the photon number measurement precision can reach the Hessenberg limit; when the optical path difference in the quantum system is completely uncertain, the wave number of the photon entangled whole state is completely determined, and the wave number measurement precision can reach the Hessenberg limit; when the delay time in the equivalent subsystem is completely uncertain, the whole frequency of the photon entanglement whole state is completely determined, and the frequency measurement precision can reach the Hessenberg limit. Random phase shift, random optical path difference, and random delay are intrinsic randomness and uncertainty inherent to quantum superposition entanglement. The prior art can accurately control the phase through artificial manipulation, and eliminate the intrinsic random phase shift of quantum superposition entanglement, so that the phase measurement precision reaches the Hessenberg limit, but the wave number and the frequency of the whole photon entanglement state are completely uncertain, and therefore, the inherent quantum property of the whole photon entanglement as the whole state is difficult to observe and obtain. Based on the technical problem, the application provides a quantum enhancement method of macroscopic quantum entanglement, which can observe the inherent quantum property of the macroscopic photon entanglement whole state, and realize quantum enhancement, thereby greatly improving the measurement accuracy of frequency and wave number and enabling the measurement accuracy to be close to the quantum limit of Hessenberg.
The specific technical scheme comprises the following steps:
providing a macro-scale multiphoton multidimensional entangled light;
taking the macro-scale multiphoton multidimensional entangled light as a light source, and selecting different measuring circuits according to different physical quantities to be measured; simultaneously observing quantum states of the two configurations of the macro-scale multi-photon multi-dimension entangled lights, wherein the measurement circuit simultaneously provides the two configurations of the macro-scale multi-photon multi-dimension entangled lights;
and obtaining the observation result of the two configurations when the macro-scale multi-photon multi-dimension entangled light is in the quantum superposition state, and obtaining the inherent quantum property of the macro-photon entangled whole state.
The quantum states of the macro-scale multi-photon multi-dimensional entangled light generally comprise three quantum states, specifically a first quantum state, a second quantum state and a third quantum state;
the first quantum state is expressed by the following formula:
the second quantum state is expressed by the following formula:
the third quantum state is expressed by the following formula:
wherein 2N is the number of entangled photons,
for the first even parity, ++>
Is a second even parity; the total spin angular momentum is 2N ћ, < >>
The total spin angular momentum is 2N ћ, < >>
The total spin angular momentum is-2N ћ. />
For the third even parity, the total spin angular momentum is zero; r is R k For right circular polarization, the spin is 1, and the wave vector K is along the +Z direction; l (L) k For left circular polarization, the spin is-1, and the wave vector K is along the +Z direction; />
For right circular polarization, the spin is 1, and the wave vector K is along the-Z direction;
for left circular polarization, the spin is-1, and the wave vector K is along the-Z direction.
It should be noted that, the simultaneous observation of the quantum states of the two configuration macro-scale multi-photon multi-dimension entangled lights means that the probability of the macro-integrated states of the two paths of macro-scale multi-photon multi-dimension entangled lights which are simultaneously output by the light source capable of bidirectionally outputting the macro-scale multi-photon multi-dimension entangled lights in a measurement circuit is observed, so that when the two are in the quantum superposition state (integrated state) at the same time, the inherent quantum properties of the macro-scale multi-photon multi-dimension entangled lights can be observed. In this application, the intrinsic quantum properties include average lifetime, frequency width, wavenumber width of entangled light,
quantum state entangled with light in two-path macroscopic scale multiphoton multidimension
For example, the number of entangled photons 2N in the multi-photon multi-dimensional entangled light produced in the present application is at least 1×10 11 For example 2n= 4.4474 ×10 11 The macroscopic scale multi-photon multi-dimension entangled light is generated by a laser based on He-Ne, and the probability of observing the whole state of the multi-photon multi-dimension entangled light is as follows:
The pattern of the probability of observing the whole state of the multiphoton multidimensional entangled light is shown in fig. 1, wherein when the probability of the whole state cannot be observed, the decoherence of the macrophoton multidimensional entangled light is the classical light, the critical time of the decoherence of the whole state is the classical state is the average life of the macroparticle entangled light, for example, in fig. 1, when the experimental observation time is greater than 2410.9 seconds, the whole state probability map disappears, and 2410.9 seconds is the average life of the entangled light, namely:τ life span = 2.4109 × 10 3 Second.
In addition, the lifetime of entangled light results from the lifetime of entangled atoms, i.e. experiments have determined the lifetime of entangled atoms at the same time. 1/τ Life span As well as the probability of entangled Ne atoms being stimulated.
In addition, the frequency width of the macroscopic-scale multiphoton multidimensional entangled light integral state can be directly calculated through the average service life of the entangled light according to the lowest limit of the quantum mechanical mismeasurement relation, and can also be obtained through Fourier transformation of the pattern of the probability of the entangled light integral state.
When the frequency width is directly calculated by the average life of the entangled light state, it can be obtained according to the following calculation formula: Δw=1-τ And (5) service life.
Still in the above quantum state
For example, the entangled light has an overall frequency width Δw=1 +. τ Life span =1/(2.4109×10 3 )=4.1478 ×10 -4 Hz。
To verify the reliability of this calculation, the pattern of probability of the overall state obtained in FIG. 1 is Fourier transformed to obtain the entangled spectrum of stimulated radiation entangled with Ne atoms, as shown in FIG. 2, to obtain the probability of frequency P (w-w) 0 ) The resulting frequency width is Δw= 4.15162 ×10 -4 Hz, it can be seen that the results are substantially identical.
The wave number width delta K of the macroscopic scale multiphoton multidimensional entangled light integral state can also be directly calculated by the average service life of the entangled light integral state according to the lowest limit of the quantum mechanical misalignment relation, and the specific calculation formula is as follows:
ΔK=1/ L life span =1/ ( C×τ Life span ),
Wherein L is Life span Space life of entangled light, when
，/>
Is greater than L Life span Decoherence is in classical state; c is a constant, and its value is c= 2.9979 ×10 10 cm ·s -1 。
At τ Life span = 2.4109 × 10 3 By way of example of a second,
L life span = C×τ Life span = 7.2276 ×10 13 cm。
ΔK×L Life span =1, then Δk=1/L Life span =1.3836 ×10 -14 cm -1 。
Since the above-mentioned macro-scale multiphoton multidimensional entangled light is produced by He-Ne based laser, he-Ne laser natural life (i.e. life of spontaneous emission single photon superposition state) τ Natural nature = 7.9592 ×10 -9 Second, wherein the second is; and the average life of macroscopic photon entangled state of the macroscopic scale multiphoton multidimensional entangled light is adopted: τ Life span = 2.4109 × 10 3 Second, τ Natural nature 3.0291 ×10 of (2) 11 The method is similar to the photon number 2N of the macroscopic scale multi-photon multi-dimensional entangled light, and the average life of the entangled state obtained by observation can be enhanced by adopting the method, wherein the enhancement multiple is similar to the photon number of the macroscopic scale multi-photon multi-dimensional entangled light. Similarly, the frequency width of macroscopic entangled photons obtained by observation is also close to 1/(2N) times of the natural line width, and the wave number width is also close to 1/(2N) times of the single photon wave number width. Therefore, the intrinsic quantum properties obtained by observing the macro-scale multi-photon multi-dimensional entangled light and the intrinsic quantum properties of single photons are enhanced by the method, and the measurement precision reaches the Hessenberg limit.
In fig. 1, entangled photons are shown
The time of occurrence is completely random. The wave function of the quantum electrodynamics description with the relation time in determining energy, determining angular momentum and determining the photon wave function of the univocal scale is e -iwt This is a periodic function that cannot describe the randomness, uncertainty of the entanglement times; nor can the randomness of the atomic spontaneous emission times be described.
In the same way, the device can be used for controlling the temperature of the liquid,
and->
Observation method and calculation method of (a)Law and->
And are identical, and thus are not described in detail herein.
In some embodiments, the measurement circuit includes a first measurement circuit, a second measurement circuit, and a third measurement circuit corresponding to three quantum states;
e.g. corresponding to
Referring to fig. 3, the first measuring circuit includes a first multiphoton entangled light source 11 for outputting the macrophoton multidimensional entangled light in two directions, two ends of the first multiphoton entangled light source 11 are respectively provided with a first optical component and a second optical component, and the light sources output from two ends of the first multiphoton entangled light source 11 are respectively input into the first coincidence measurement 14 through the first optical component and the second optical component. Wherein the first optical assembly comprises a first linear polarizer 12 and a first 1/4 wave plate 13; the second optical assembly comprises a second linear polarizer 15 and a second 1/4 wave plate 16; the light source output from one end of the first multiphoton entangled light source 11 is sequentially input into the first coincidence measurement 14 through the first linear polarizer 12 and the first 1/4 wave plate 13, and the light source output from the other end of the first multiphoton entangled light source 11 is sequentially input into the first coincidence measurement 14 through the second linear polarizer 15 and the second 1/4 wave plate 16.
The angle settings (angle between the polarization direction and the transmission axis of the polarizer) of the first linear polarizer 12 and the second linear polarizer 15 corresponding to the light source output from the two ends of the multiphoton entangled light source 11 are not the same, wherein the polarizer angle of the first linear polarizer 12 is set to-90 °, the polarizer angle of the second linear polarizer 15 is set to 0 °, and the first linear polarizer 12 generates-90 ° linearly polarized light, which passes throughθThe first 1/4 wave plate 13 of = -45 ° emits left circularly polarized light; the second linear polarizer 15 generates 0 degree linear polarized lightθThe second 1/4 wave plate 16, which is=45°, emits right circularly polarized light.
It should be noted that the multi-photon entangled light source used in the present application may be a light source generator capable of generating a macro-scale multi-photon multi-dimension entangled light at two ends, such as a multi-photon entangled light source disclosed in CN 109581656B.
E.g. corresponding to
Referring to fig. 4, the second measurement circuit includes a second multiphoton entangled light source 21 for outputting the macrophoton entangled light in two directions, wherein a third optical component and a fourth optical component are respectively disposed at two ends of the second multiphoton entangled light source 21, and the light sources output at two ends of the second multiphoton entangled light source 21 are respectively input into the second coincidence measurement 24 through the third optical component and the fourth optical component. Wherein the third optical assembly comprises a third linear polarizer 22 and a third 1/4 wave plate 23; the light source output from one end of the second multi-photon entangled light source 21 is input into the second coincidence measurement 24 through the third linear polarizer 22 and the third 1/4 wave plate 23 in sequence; the fourth optical assembly comprises a fourth linear polarizer 25 and a fourth 1/4 wave plate 26; the light source output from the other end of the second multi-photon entangled light source 21 is input into the second coincidence measurement 24 through the fourth linear polarizer 25 and the fourth 1/4 wave plate 26 in sequence.
The angle setting (the angle between the polarization direction and the transmission axis of the polarizer) of the third linear polarizer 22 and the fourth linear polarizer 25 corresponding to the light sources output from the two ends of the second multiphoton entangled light source 21 are not the same, wherein the angle of the third linear polarizer 22 is set to 180 °, the angle of the fourth linear polarizer 25 is set to 90 °, and the third linear polarizer 22 generates 180 ° linearly polarized light, which passes throughθThe third 1/4 wave plate 23 of = -45 ° emits right circularly polarized light, and the fourth linear polarizer 25 generates 90-degree linearly polarized light viaθThe fourth 1/4 wave plate 26, which=225°, emits left circularly polarized light;
e.g. corresponding to
This quantum state, referring to fig. 5, the third measurement circuit includes a third multiphoton entangled-light source 31 for bi-directionally outputting the macro-scale multiphoton multidimensional entangled-light; the third multiphoton entangled light source 31The two ends of the third multi-photon entanglement light source 31 are respectively provided with a fifth optical component and a sixth optical component, and the light sources output by the two ends of the third multi-photon entanglement light source are respectively input into the third coincidence measurement 35 through the fifth optical component and the sixth optical component; wherein the fifth optical component comprises a fifth polarization splitting prism 32, a fifth 1/4 wave plate 33 and a sixth 1/4 wave plate 34; the sixth optical component includes a sixth polarization splitting prism 36, a seventh 1/4 wave plate 37, and an eighth 1/4 wave plate 38; a light source output from one end of the third multiphoton entangled light source 31 emits a horizontal linear polarized light and a vertical linear polarized light through the fifth polarization beam splitter prism 32, and the horizontal linear polarized light and the vertical linear polarized light are input into the third coincidence measurement 35 through the fifth 1/4 wave plate 33 and the sixth 1/4 wave plate 34, respectively; the light source output from the other end of the third multi-photon entanglement light source 31 emits a horizontal linear polarized light and a vertical linear polarized light through the sixth polarization beam splitter prism 36, and the horizontal linear polarized light and the vertical linear polarized light are input into the third coincidence measurement 35 through the seventh 1/4 wave plate 37 and the eighth 1/4 wave plate 38, respectively.
It should be noted that, the light sources output from two ends of the third multiphoton entangled light source 31 respectively emit a horizontal linear polarized light and a vertical linear polarized light through the corresponding fifth polarizing beam splitter prism 32 and sixth polarizing beam splitter prism 36, wherein the horizontal linear polarized light emitted from the fifth polarizing beam splitter prism 32 passes throughθThe fifth 1/4 wave plate 33 with the angle of between 45 and 45 degrees outputs right circularly polarized light and vertical linearly polarized light throughθThe sixth 1/4 wave plate 34 of = -45 ° emits left circularly polarized light; the horizontally linearly polarized light emitted by the sixth polarization splitting prism 36 passes throughθThe seventh 1/4 wave plate 37, which is=45°, emits right circularly polarized light, and the vertically linearly polarized light emits left circularly polarized light through the eighth 1/4 wave plate 38, which is θ=225°.
Wherein, the liquid crystal display device comprises a liquid crystal display device,
，/>
，/>
is a measuring operator->
Can be measured simultaneously.
In some embodiments, when the
When on the H/V basis, the quantum state is expressed as follows:
wherein (1)>
Is a measuring operator->
Is an eigenstate of (2);
in this case, referring to fig. 6, the structure of the third measurement circuit may further be: a measurement circuit comprising a fourth multiphoton entangled light source 41, the seventh optical assembly comprising a seventh polarization splitting prism 42, an eighth optical assembly comprising an eighth polarization splitting prism 44, and a fourth coincidence measurement 43; a light source output from one end of the fourth multi-photon entanglement light source 41 emits a horizontal linear polarized light and a vertical linear polarized light through the seventh polarization splitting prism 42, and the horizontal linear polarized light and the vertical linear polarized light are input into a fourth coincidence measurement 43; the light source output from one end of the fourth multi-photon entangled light source 41 emits a horizontal linear polarized light and a vertical linear polarized light through the eighth polarization beam splitter 44, and the horizontal linear polarized light and the vertical linear polarized light are input into the fourth coincidence measurement 43.
It should be noted that the number of the substrates,
，/>
the two are not easy to use and cannot be measured simultaneously.
The application also provides a quantum enhancement device of a macroscopic quantum entangled state, which comprises a multiphoton entangled light source for outputting the macroscopic-scale multiphoton multidimensional entangled light in a bidirectional manner, wherein two ends of the multiphoton entangled light source are respectively provided with a first optical component and a second optical component, and the light sources output by two ends of the multiphoton entangled light source are respectively input into the first coincidence measurement through the first optical component and the second optical component;
wherein the first optical component comprises a first linear polarizer with an angle of-90 DEG andθ-45 ° of the first 1/4 wave plate; the second optical component comprises a second linear polarizer with an angle set to 0 DEG andθa second 1/4 wave plate=45°; a light source output by one end of the first multi-photon entanglement light source sequentially passes through the first linear polarizer and the first 1/4 wave plate to emit left circularly polarized light, and the left circularly polarized light is input into the first coincidence measurement; and a light source output by the other end of the first multi-photon entanglement light source sequentially passes through the second linear polarizer and the second 1/4 wave plate to emit right circularly polarized light, and the right circularly polarized light is input into the first coincidence measurement.
The application also provides a quantum enhancement device of a macroscopic quantum entangled state, which comprises a second multiphoton entangled light source for outputting macroscopic-scale multiphoton multidimensional entangled light in a two-way manner, and a third optical component and a fourth optical component which are respectively arranged at two ends of the second multiphoton entangled light source, wherein the light sources output at two ends of the second multiphoton entangled light source are respectively input into a second coincidence measurement through the third optical component and the fourth optical component;
the third optical component comprises a third linear polarizer with an angle of 180 DEGθA third 1/4 wave plate of = -45 ° and the fourth optical assembly comprises a fourth linear polarizer with an angle set to 90 ° andθa fourth 1/4 wave plate with the angle of 225 degrees, wherein a light source output by one end of the second multi-photon entanglement light source sequentially passes through the third linear polarizer and the third 1/4 wave plate to emit right circularly polarized light, and the right circularly polarized light is input into the second coincidence measurement; and a light source output by the other end of the second multi-photon entanglement light source sequentially passes through the fourth linear polarizer and the fourth 1/4 wave plate to emit left circularly polarized light, and the left circularly polarized light is input into the second coincidence measurement.
The application also provides a quantum enhancement device of the macroscopic quantum entangled state, which comprises a third multiphoton entangled light source for outputting the macroscopic-scale multiphoton multidimensional entangled light in a bidirectional manner; the two ends of the third multiphoton entangled light source are respectively provided with a fifth optical component and a sixth optical component, and the light sources output by the two ends of the third multiphoton entangled light source are respectively input into the third coincidence measurement through the fifth optical component and the sixth optical component;
The fifth optical component comprises a fifth polarization splitting prism, a fifth 1/4 wave plate and a sixth 1/4 wave plate; the horizontal linearly polarized light emitted by the fifth polarization beam splitter prism entersθThe fifth 1/4 wave plate with the angle of 45 degrees is characterized in that the vertical linear polarized light emitted by the fifth polarization beam splitting prism is incidentθ-45 ° of the sixth 1/4 wave plate; the sixth optical component comprises a sixth polarization splitting prism, a seventh 1/4 wave plate and an eighth 1/4 wave plate; the horizontally linearly polarized light emitted by the sixth polarization beam splitter prism entersθThe seventh 1/4 wave plate of 45 DEG, the vertical linear polarized light emitted by the sixth polarization splitting prism is incidentθThe eighth 1/4 wave plate=225°; the light source output by one end of the multiphoton entangled light source outputs right circularly polarized light through a fifth 1/4 wave plate and inputs the right circularly polarized light into the third coincidence measurement, and the vertical linearly polarized light outputs left circularly polarized light through a sixth 1/4 wave plate and inputs the left circularly polarized light into the third coincidence measurement; and the horizontal linearly polarized light emitted by the sixth polarization splitting prism emits right circularly polarized light through a seventh 1/4 wave plate and is input into the third coincidence measurement, and the vertical linearly polarized light emits left circularly polarized light through an eighth 1/4 wave plate and is input into the third coincidence measurement.
The application also provides a quantum enhancement device of a macroscopic quantum entangled state, which comprises a fourth multiphoton entangled light source 41 for outputting the macroscopic-scale multiphoton multidimensional entangled light in a bidirectional manner; a seventh optical component and an eighth optical component are respectively arranged at two ends of the fourth multi-photon entangled light source 41, and the light sources output at two ends of the fourth multi-photon entangled light source 41 are respectively input into the fourth coincidence measurement 43 through the seventh optical component and the eighth optical component;
wherein the seventh optical component comprises a seventh polarization splitting prism 42; a light source output from one end of the fourth multi-photon entangled light source 41 emits a horizontal linear polarized light and a vertical linear polarized light through the seventh polarization splitting prism 42, and the horizontal linear polarized light and the vertical linear polarized light are input into the fourth coincidence measurement 43; the eighth optical component comprises an eighth polarization splitting prism; and a light source output by one end of the fourth multi-photon entanglement light source emits horizontal linearly polarized light and vertical linearly polarized light through the eighth polarization splitting prism, and the horizontal linearly polarized light and the vertical linearly polarized light are input into the fourth coincidence measurement.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.
Claims (10)
1. A method of quantum enhancement of macroscopic quantum entanglement, comprising:
providing a macro-scale multiphoton multidimensional entangled light;
selecting different measuring circuits according to different physical quantities to be measured by taking the macro-scale multiphoton multidimensional entangled light as a light source, wherein the measuring circuits simultaneously provide two configurations of macro-scale multiphoton multidimensional entangled light;
and observing the quantum state of the two-configuration macro-scale multi-photon multi-dimension entangled light, and obtaining an observation result when the two-configuration macro-scale multi-photon multi-dimension entangled light is in a quantum superposition state, thereby obtaining the inherent quantum property of the entangled whole state of the macro-scale multi-photon multi-dimension entangled light.
2. The quantum enhancement method of a macroscopic quantum entangled state according to claim 1 wherein the observation of the macroscopic-scale multi-photon multi-dimensional entangled light is enhanced by a factor of 2N compared to that of a single photon; wherein 2N is the number of macroscopic entangled photons.
3. The method of quantum enhancement of macroscopic quantum entanglement according to claim 1, wherein said intrinsic quantum properties include average lifetime, frequency width, wavenumber width of entangled light; the quantum states are a first quantum state, a second quantum state and a third quantum state;
The first quantum state is expressed by the following formula:
the second quantum state is expressed by the following formula:
the third quantum state is expressed by the following formula:
wherein 2N is the number of entangled photons, |
>Is the first even parity, | +.>
>A second even parity; | I->
>The total spin angular momentum is 2N ћ, | +.>
>The total spin angular momentum is-2N ћ, | +.>
>For the third even parity, the total spin angular momentum is zero;
for right circular polarization, the spin is 1, and the wave vector K is along the +Z direction; />
For left circular polarization, the spin is-1, and the wave vector K is along the +Z direction;
for right circular polarization, the spin is 1, and the wave vector K is along the-Z direction; />
For left circular polarization, the spin is-1, and the wave vector K is along the-Z direction.
4. A method of quantum enhancement of macroscopic quantum entanglement according to claim 3, wherein,
the measuring circuit comprises a first measuring circuit, a second measuring circuit and a third measuring circuit;
the first measuring circuit comprises a first multiphoton entangled light source for outputting the macrophoton entangled light in a bidirectional manner, and a first optical component and a second optical component which are respectively arranged at two ends of the first multiphoton entangled light source, wherein the light sources output at two ends of the first multiphoton entangled light source are respectively input into a first coincidence measurement through the first optical component and the second optical component;
The second measuring circuit comprises a second multi-photon entangled light source for outputting the macro-scale multi-photon multidimensional entangled light in a two-way mode, and a third optical component and a fourth optical component which are respectively arranged at two ends of the second multi-photon entangled light source, wherein the light sources output at two ends of the second multi-photon entangled light source are respectively input into a second coincidence measurement through the third optical component and the fourth optical component;
the third measuring circuit comprises a third multi-photon entangled light source for outputting the macro-scale multi-photon entangled light in a two-way mode, and a fifth optical component and a sixth optical component which are respectively arranged at two ends of the third multi-photon entangled light source, wherein the light sources output at two ends of the third multi-photon entangled light source are respectively input into a third coincidence measurement through the fifth optical component and the sixth optical component.
5. The method of quantum enhancement of macroscopic quantum entanglement according to claim 4, wherein said first optical component comprises a first linear polarizer and a first 1/4 wave plate, said first linear polarizer having an angle set to-90 °; the second optical component comprises a second linear polarizer and a second 1/4 wave plate, and the angle of the second linear polarizer is set to be 0 degree; the light source output by one end of the first multiphoton entangled light source sequentially passes through the first linear polarizer, θThe first 1/4 wave plate of = -45 ° emits left circularly polarized light and the left circularly polarized light is input into the first coincidence measurement; the light source output by the other end of the first multi-photon entangled light source sequentially passes through the second linear polarizer,θThe second 1/4 wave plate of=45° emits right circularly polarized light, and the right circularly polarized light is input into the first coincidence measurement; and/or
The third optical component comprises a third linear polarizer and a third 1/4 wave plate, wherein the angle of the third linear polarizer is set to be 180 degrees; the fourth optical component comprises a fourth linear polarizer and a fourth 1/4 wave plate, wherein the angle of the fourth linear polarizer is set to 90 degrees; the light source output by one end of the second multi-photon entangled light source sequentially passes through the third linear polarizer,θThe third 1/4 wave plate of = -45 ° emits right circularly polarized light and the right circularly polarized light is input into the second coincidence measurement; the light source output by the other end of the second multi-photon entangled light source sequentially passes through the fourth linear polarizer,θThe fourth 1/4 wave plate=225° emits left circularly polarized light, and the left circularly polarized light is input to the second coincidence measurement; and/or
The fifth optical component comprises a fifth polarization splitting prism, a fifth 1/4 wave plate and a sixth 1/4 wave plate; the horizontal linearly polarized light emitted by the fifth polarization beam splitter prism enters θ-45 ° of saidA fifth 1/4 wave plate, wherein the vertical linear polarized light emitted by the fifth polarization beam splitter prism is incidentθ-45 ° of the sixth 1/4 wave plate; the sixth optical component comprises a sixth polarization splitting prism, a seventh 1/4 wave plate and an eighth 1/4 wave plate; the horizontally linearly polarized light emitted by the sixth polarization beam splitter prism entersθThe seventh 1/4 wave plate of 45 DEG, the vertical linear polarized light emitted by the sixth polarization splitting prism is incidentθThe eighth 1/4 wave plate=225°; the light source output by one end of the multiphoton entangled light source outputs right circularly polarized light through a fifth 1/4 wave plate and inputs the right circularly polarized light into the third coincidence measurement, and the vertical linearly polarized light outputs left circularly polarized light through a sixth 1/4 wave plate and inputs the left circularly polarized light into the third coincidence measurement; and the horizontal linear polarized light emitted by the sixth polarization splitting prism emits right circular polarized light through a seventh 1/4 wave plate and is input into the third coincidence measurement, and the vertical linear polarized light emits left circular polarized light through an eighth 1/4 wave plate and is input into the third coincidence measurement.
6. The quantum enhancement method of claim 4, wherein the third measurement circuit is further a measurement circuit comprising a fourth multiphoton entangled light source, a seventh optical component, an eighth optical component, and a fourth coincidence measurement, the seventh optical component comprising a seventh polarization splitting prism; the eighth optical component comprises an eighth polarization splitting prism; a light source output by one end of the fourth multi-photon entanglement light source emits horizontal linearly polarized light and vertical linearly polarized light through the seventh polarization splitting prism, and the horizontal linearly polarized light and the vertical linearly polarized light are input into the fourth coincidence measurement; and a light source output by the other end of the fourth multi-photon entanglement light source emits horizontal linearly polarized light and vertical linearly polarized light through the eighth polarization splitting prism, and the horizontal linearly polarized light and the vertical linearly polarized light are input into the fourth coincidence measurement.
7. The quantum enhancement device for macroscopic quantum entangled state is characterized by comprising a first multiphoton entangled light source for outputting macroscopic-scale multiphoton multidimensional entangled light in a bidirectional manner, and a first optical component and a second optical component which are respectively arranged at two ends of the first multiphoton entangled light source, wherein the light sources output at two ends of the first multiphoton entangled light source are respectively input into a first coincidence measurement through the first optical component and the second optical component;
wherein the first optical component comprises a first linear polarizer with an angle of-90 DEG andθa first 1/4 wave plate with an angle of 45 DEG, the second optical component comprises a second linear polarizer with an angle of 0 DEG andθa second 1/4 wave plate=45°; a light source output by one end of the first multi-photon entanglement light source sequentially passes through the first linear polarizer and the first 1/4 wave plate to emit left circularly polarized light, and the left circularly polarized light is input into the first coincidence measurement; and a light source output by the other end of the first multi-photon entanglement light source sequentially passes through the second linear polarizer and the second 1/4 wave plate to emit right circularly polarized light, and the right circularly polarized light is input into the first coincidence measurement.
8. The quantum enhancement device for macroscopic quantum entangled state is characterized by comprising a second multiphoton entangled light source for outputting macroscopic multiphoton multidimensional entangled light in a bidirectional manner, and a third optical component and a fourth optical component which are respectively arranged at two ends of the second multiphoton entangled light source, wherein the light sources output at two ends of the second multiphoton entangled light source are respectively input into a second coincidence measurement through the third optical component and the fourth optical component; the third optical component comprises a third linear polarizer with an angle of 180 DEG θA third 1/4 wave plate of = -45 ° and the fourth optical assembly comprises a fourth linear polarizer with an angle set to 90 ° andθa fourth 1/4 wave plate with the angle of 225 degrees, wherein a light source output by one end of the second multi-photon entanglement light source sequentially passes through the third linear polarizer and the third 1/4 wave plate to emit right circularly polarized light, and the right circularly polarized light is input into the second coincidence measurement; and a light source output by the other end of the second multi-photon entanglement light source sequentially passes through the fourth linear polarizer and the fourth 1/4 wave plate to emit left circularly polarized light, and the left circularly polarized light is input into the second coincidence measurement.
9. The quantum enhancement device for macroscopic quantum entangled state is characterized by comprising a third multiphoton entangled light source for outputting macroscopic-scale multiphoton multidimensional entangled light in a bidirectional manner, and a fifth optical component and a sixth optical component which are respectively arranged at two ends of the third multiphoton entangled light source, wherein the light sources output at two ends of the third multiphoton entangled light source are respectively input into a third coincidence measurement through the fifth optical component and the sixth optical component;
the fifth optical component comprises a fifth polarization splitting prism, a fifth 1/4 wave plate and a sixth 1/4 wave plate; the horizontal linearly polarized light emitted by the fifth polarization beam splitter prism enters θThe fifth 1/4 wave plate with the angle of 45 degrees is characterized in that the vertical linear polarized light emitted by the fifth polarization beam splitting prism is incidentθ-45 ° of the sixth 1/4 wave plate; the sixth optical component comprises a sixth polarization splitting prism, a seventh 1/4 wave plate and an eighth 1/4 wave plate; the horizontally linearly polarized light emitted by the sixth polarization beam splitter prism entersθThe seventh 1/4 wave plate of 45 DEG, the vertical linear polarized light emitted by the sixth polarization splitting prism is incidentθThe eighth 1/4 wave plate=225°; the light source output by one end of the multiphoton entangled light source outputs right circularly polarized light through a fifth 1/4 wave plate and inputs the right circularly polarized light into the third coincidence measurement, and the vertical linearly polarized light outputs left circularly polarized light through a sixth 1/4 wave plate and inputs the left circularly polarized light into the third coincidence measurement; and the horizontal linearly polarized light emitted by the sixth polarization splitting prism emits right circularly polarized light through a seventh 1/4 wave plate and is input into the third coincidence measurement, and the vertical linearly polarized light emits left circularly polarized light through an eighth 1/4 wave plate and is input into the third coincidence measurement.
10. The quantum enhancement device for macroscopic quantum entangled state is characterized by comprising a fourth multiphoton entangled light source for outputting macroscopic-scale multiphoton multidimensional entangled light in a bidirectional manner, and a seventh optical component and an eighth optical component which are respectively arranged at two ends of the fourth multiphoton entangled light source, wherein the light sources output at two ends of the fourth multiphoton entangled light source are respectively input into a fourth coincidence measurement through the seventh optical component and the eighth optical component;
Wherein the seventh optical component comprises a seventh polarization splitting prism; a light source output by one end of the fourth multi-photon entanglement light source emits horizontal linearly polarized light and vertical linearly polarized light through the seventh polarization splitting prism, and the horizontal linearly polarized light and the vertical linearly polarized light are input into the fourth coincidence measurement; the eighth optical component comprises an eighth polarization splitting prism; and a light source output by one end of the fourth multi-photon entanglement light source emits horizontal linearly polarized light and vertical linearly polarized light through the eighth polarization splitting prism, and the horizontal linearly polarized light and the vertical linearly polarized light are input into the fourth coincidence measurement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310386052.6A CN116107130B (en) | 2023-04-12 | 2023-04-12 | Quantum enhancement method and device for macroscopic quantum entangled state |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310386052.6A CN116107130B (en) | 2023-04-12 | 2023-04-12 | Quantum enhancement method and device for macroscopic quantum entangled state |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116107130A CN116107130A (en) | 2023-05-12 |
| CN116107130B true CN116107130B (en) | 2023-06-23 |
Family
ID=86264100
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310386052.6A Active CN116107130B (en) | 2023-04-12 | 2023-04-12 | Quantum enhancement method and device for macroscopic quantum entangled state |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116107130B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204272131U (en) * | 2014-11-28 | 2015-04-15 | 华南师范大学 | A kind of generation system of spin-orbit angular momentum mixing Entangled State |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6424665B1 (en) * | 1999-04-30 | 2002-07-23 | The Regents Of The University Of California | Ultra-bright source of polarization-entangled photons |
| WO2007102408A1 (en) * | 2006-03-03 | 2007-09-13 | Japan Science And Technology Agency | Quantum entanglement photon-pair producing device and quantum entanglement photon pair producing method |
| US8385548B2 (en) * | 2009-02-17 | 2013-02-26 | Nucrypt Llc | System and method for entangled photons generation and measurement |
| JP5867232B2 (en) * | 2012-03-29 | 2016-02-24 | 沖電気工業株式会社 | Quantum entangled photon pair generator |
| CN104898288B (en) * | 2015-06-02 | 2017-04-12 | 清华大学 | Compact semiconductor laser apparatus and two-photon polarization entangled source generation system |
| CN207541825U (en) * | 2017-08-16 | 2018-06-26 | 安徽问天量子科技股份有限公司 | It tangles source preparation and tangles source tutoring system with what Entanglement measured |
| CN109581656B (en) * | 2019-01-16 | 2020-10-30 | 匡一中 | Multi-photon entanglement light source |
| CN110518446A (en) * | 2019-09-04 | 2019-11-29 | 匡一中 | Multi-photon entangled light source |
| US11170318B2 (en) * | 2019-10-31 | 2021-11-09 | Nxgen Partners Ip, Llc | Multi-photon, multi-dimensional hyper-entanglement using higher-order radix qudits with applications to quantum computing, QKD and quantum teleportation |
| US11290181B1 (en) * | 2021-03-18 | 2022-03-29 | The United States Of America As Represented By The Secretary Of The Army | System and method for measurement of entangled photons wavefunctions |
| CN113567351B (en) * | 2021-06-10 | 2022-08-09 | 四川大学 | Complex magneto-optical angle measuring system and method based on quantum weak measurement |
-
2023
- 2023-04-12 CN CN202310386052.6A patent/CN116107130B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204272131U (en) * | 2014-11-28 | 2015-04-15 | 华南师范大学 | A kind of generation system of spin-orbit angular momentum mixing Entangled State |
Also Published As
| Publication number | Publication date |
|---|---|
| CN116107130A (en) | 2023-05-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Healy et al. | Remnant mass, spin, and recoil from spin aligned black-hole binaries | |
| Scaccabarozzi et al. | Galaxy two-point correlation function in general relativity | |
| Li et al. | High-powered optical superlattice with robust phase stability for quantum gas microscopy | |
| Niederriter et al. | Simultaneous control of orbital angular momentum and beam profile in two-mode polarization-maintaining fiber | |
| Beyer et al. | Active fiber-based retroreflector providing phase-retracing anti-parallel laser beams for precision spectroscopy | |
| Wen et al. | Experimental study of tune-out wavelengths for spin-dependent optical lattice in 87 Rb Bose–Einstein condensation | |
| Solimeno et al. | Fabry-Pérot resonators with oscillating mirrors | |
| Zhang et al. | Real‐time superresolution interferometric measurement enabled by structured nonlinear optics | |
| CN116107130B (en) | Quantum enhancement method and device for macroscopic quantum entangled state | |
| Makowski et al. | Lyot depolarizer in terms of the theory of coherence—description for light of any spectrum | |
| Temkina et al. | Manufacturing method and stability research of the fiber quarter-wave plate for fiber optic current sensor | |
| Andia et al. | Bloch oscillations in an optical lattice generated by a laser source based on a fiber amplifier: decoherence effects due to amplified spontaneous emission | |
| Akin et al. | Optimization of electromagnetically induced transparency by changing the radial size of Laguerre–Gaussian laser modes | |
| Tinsley et al. | Prospects for a simultaneous atom interferometer with ultracold cadmium and strontium for fundamental physics tests | |
| Fulda | Precision interferometry in a new shape: higher-order Laguerre-Gauss modes for gravitational wave detection | |
| Loesel et al. | Optical design of PHARAO | |
| DeSavage et al. | Raman resonances in arbitrary magnetic fields | |
| She et al. | Rapid measurement method of intracavity phase retardation based on laser frequency splitting | |
| Langille et al. | Efficient framework for the examination of the field of view sensitivity of a field-widened birefringent interferometer | |
| Fiderer et al. | A quantum-chaotic cesium-vapor magnetometer | |
| Smith | Physical optics analysis of a fiber-delivered displacement interferometer | |
| Schmid et al. | Adjustable and robust methods for polarization-dependent focusing | |
| Lu et al. | Electromagnetically<? Pub Caret?> induced transparency with nuclear spin | |
| Yang et al. | Optimizing noble gas pressure for enhanced self-compensation in spin-exchange relaxation-free comagnetometers | |
| Kalinchenko et al. | Positioning of Littrow mounted gratings in pulse compressors |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |