CN217037195U - Miniaturized quantum key distribution receiving terminal equipment - Google Patents
Miniaturized quantum key distribution receiving terminal equipment Download PDFInfo
- Publication number
- CN217037195U CN217037195U CN202123214653.4U CN202123214653U CN217037195U CN 217037195 U CN217037195 U CN 217037195U CN 202123214653 U CN202123214653 U CN 202123214653U CN 217037195 U CN217037195 U CN 217037195U
- Authority
- CN
- China
- Prior art keywords
- quantum
- optical
- module
- signal
- interface
- 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
Landscapes
- Optical Communication System (AREA)
Abstract
The utility model discloses a miniaturized quantum key distribution receiving end device which is used for receiving signal light formed by wavelength division multiplexing of quantum light signals, synchronous light signals and negotiation light signals, detecting the signal light and generating a quantum key. The receiving end device comprises a QKD module, a classical quantum wavelength division multiplexing module, a PCIE general interface and an optical interface. The classical quantum wavelength division multiplexing module is used for demultiplexing a quantum optical signal, a synchronous optical signal and a negotiation optical signal in signal light, so that optical communication required by QKD can be realized by using one optical interface, and digital communication required by QKD can be realized by using one general interface. Therefore, the hardware interface configuration of the receiving end equipment can be simplified, the reduction of the external size of the receiving end equipment is facilitated, and the interface adaptation with various classical equipment is facilitated.
Description
Technical Field
The utility model relates to the field of quantum secret communication, in particular to a miniaturized quantum key distribution receiving end device.
Background
To implement the quantum key distribution process, the QKD device needs to communicate various signals such as quantum optical signals, synchronous optical signals, negotiation signals, quantum keys, key management information, and device state information. To this end, various hardware interfaces are typically provided in existing QKD devices to serve as respective signal interfaces. As shown in fig. 1, a typical existing QKD device is provided with five hardware interfaces, namely, a key output interface for outputting a quantum key, a key management interface for transmitting and receiving key management data, a key agreement interface for transmitting and receiving key agreement data, a network management interface for transmitting and receiving network management data, and an optical interface for quantum optical signals/synchronous optical signals. The complex hardware interface structure not only requires larger device size, but also is difficult to meet the adaptation requirements of different types of classical devices for hardware interfaces, so that the current QKD device has defects in portability and adaptability.
SUMMERY OF THE UTILITY MODEL
Aiming at the problems in the prior art, the utility model discloses a miniaturized quantum key distribution receiving end device which is used for receiving signal light, detecting the signal light and generating a quantum key, wherein the signal light is formed by quantum light signals, synchronous light signals and negotiation light signals through wavelength division multiplexing;
the quantum key distribution receiving end equipment is characterized by comprising a QKD module, a classical quantum wavelength division multiplexing module and a signal interface;
the signal interface comprises only one general interface and one optical interface;
the general interface is connected with the QKD module and is used for allowing digital signals to be communicated to the outside;
the optical interface is connected with the classical quantum wavelength division multiplexing module and is used for allowing optical signals to be communicated to the outside;
the classical quantum wavelength division multiplexing module is connected with the QKD module and is used for demultiplexing the signal light into a quantum optical signal, a synchronous optical signal and a negotiation optical signal;
and the QKD module is used for detecting the quantum optical signal, the synchronous optical signal and the negotiation optical signal and generating the quantum key.
Preferably, the classical quantum wavelength division multiplexing module comprises a wavelength division multiplexer.
Preferably, the universal interface is a PCIE interface.
Preferably, the optical interface is an LC/UPC interface.
Furthermore, the QKD module comprises a random number generation unit, a quantum optical signal detection unit, a synchronous optical screening unit, a classical negotiation unit and a control unit;
the random number generating unit is used for generating a random number;
the quantum optical signal detection unit is used for detecting and decoding the quantum optical signal to generate decoded data;
the synchronous light discrimination unit is used for detecting the synchronous light signal and generating a synchronous electric signal;
the classical negotiation unit is used for detecting the negotiation optical signal and generating a negotiation electrical signal;
the control unit is used for generating the quantum key according to the decoding data and the negotiation electric signal.
Preferably, the random number generation unit includes a random number chip; and/or the classical negotiation unit comprises a photoelectric converter; and/or the synchronous light screening unit comprises a synchronous light detector.
Further, the control unit includes a processor and a memory. Wherein the processor may be implemented by means of a separate CPU and FPGA, or by means of a processor having an integrated driving function.
Furthermore, the quantum optical signal detection unit comprises an optical chip, a detector module, a time measurement module, a detector control module and a decoding control module;
the decoding control module is used for controlling the optical chip;
the optical chip is used for decoding the quantum optical signal to generate a decoded optical signal;
the detector control module is used for controlling the detector module;
the detector module is used for detecting the decoded optical signal and generating a detection electrical signal;
the time measurement module is used for extracting the decoding data from the detection electric signal.
Preferably, the quantum key distribution receiving end device may have a two-dimensional planar dimension of no more than 120mm x 220 mm.
Drawings
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 shows a typical structure of a prior art QKD device;
fig. 2 shows an exemplary embodiment of a quantum key distribution receiving end device according to the present invention.
Detailed Description
Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. The following examples are provided by way of illustration in order to fully convey the spirit of the utility model to those skilled in the art to which the utility model pertains. Accordingly, the present invention is not limited to the embodiments disclosed herein.
Fig. 2 shows an exemplary embodiment of a quantum key distribution receiving end device according to the present invention.
According to the utility model, the quantum key distribution receiving end device can comprise a QKD module and a classical quantum wavelength division multiplexing module. Meanwhile, in terms of signal interfaces, only one general interface and one optical interface are provided.
The generic interface is used to allow the receiving device to communicate digital signals with the outside world, and includes but is not limited to quantum keys, key management data, network management data, device status information data (e.g., temperature, abnormal information, etc.), and the like.
The optical interface is configured to allow the receiving end device to communicate with the outside world with an optical signal, where the optical signal may be signal light transmitted by the quantum key distribution transmitting end device, and the optical signal is formed by wavelength division multiplexing of a quantum optical signal, a synchronous optical signal, and a negotiation optical signal.
As a preferred example, the generic interface may be a PCIE interface, thereby allowing the receiving end device to interface with various types of classical devices quickly in a flexible manner.
As a preferred example, the optical interface may be an LC/UPC interface, thereby allowing the receiving end device to quickly connect to an external fiber channel to receive an optical signal, such as signal light, transmitted by the transmitting end device.
In the receiving end device, the classical quantum wavelength division multiplexing module is connected to the optical interface, and is configured to demultiplex signal light including the quantum optical signal, the synchronous optical signal, and the negotiation optical signal, so that the quantum optical signal, the synchronous optical signal, and the negotiation optical signal are transmitted toward the QKD module in three paths.
As a preferred example, a classical quantum wavelength division multiplexing module may comprise a wavelength division multiplexer.
The QKD module receives the quantum optical signal, the synchronous optical signal and the negotiation optical signal, respectively detects the quantum optical signal, the synchronous optical signal and the negotiation optical signal, and generates a quantum key based on the detection result.
Therefore, compared with the prior art that a plurality of optical and signal interfaces (such as a key negotiation interface, a quantum optical signal/synchronous optical interface, a key output interface, a key management interface, a network management interface and the like) are generally required to be configured for the receiving end device, the receiving end device provided by the utility model has the advantages that only one general interface and one optical interface are arranged on the signal interface to meet the data communication requirement of the device by arranging the classical quantum wavelength division multiplexing module, so that the number of device interfaces is greatly reduced, and the size of the receiving end device is further reduced. For example, the two-dimensional planar dimensions (length/width) of the receiver device may be reduced to 120mm by 220 mm.
With continued reference to fig. 2, in this particular embodiment, the QKD module may include a random number generation unit, a quantum optical signal detection unit, a synchronous optical screening unit, a classical negotiation unit, and a control unit.
The random number generation unit is used for generating random numbers, such as quantum random numbers. As an example, the random number generation unit may include a random number chip.
The synchronous light screening unit is used for detecting the synchronous light signals to generate synchronous electric signals for time synchronization in the quantum key distribution process.
As an example, the synchronous light screening unit may comprise a photodetector for converting the synchronous optical signal into a synchronous electrical signal.
The classical negotiation unit is used for detecting the negotiation optical signal to generate a negotiation electrical signal and is used for realizing a classical negotiation function in the quantum key distribution process.
The quantum optical signal detection unit is used for detecting and decoding the quantum optical signal to generate decoded data.
As shown in fig. 2, the quantum optical signal detection unit may include an optical chip, a detector module, a time measurement module, a detector control module, and a decoding control module.
The decoding control module is used for controlling the optical chip, and the optical chip is used for decoding the quantum optical signal under the control of the decoding control module to generate a decoded optical signal.
As an example, the decode control module may control the optical chip based on a random number.
The detector control module is used for controlling the detector module, and the detector module detects the decoded optical signal under the control of the detector control module to generate a detection electric signal related to the quantum optical signal.
The time measuring module is used for extracting decoding data from the detection electric signal.
The control unit can obtain the decoding data from the time measuring module, obtain the negotiation electric signal from the classical negotiation unit, and according to the decoding data and the negotiation electric signal, carry out post-processing such as basis vector comparison, error correction and privacy amplification, and finally generate the quantum key.
As an example, the control unit may comprise a processor and a memory.
In the present invention, the processor may be realized by a separate CPU and FPGA, or may be realized by a processor having an integrated driving function (e.g., ZYNQ).
The memory may be used for caching of data.
In summary, in the quantum key distribution receiving end device of the present invention, the hardware structure is optimally designed, and by setting the classical quantum wavelength division multiplexing module, the signal light (which is a wavelength division multiplexing signal including a quantum light signal, a synchronous light signal, and a negotiation light signal) sent by the sending end device can be received by using the same optical interface, so that only one PCIE universal standard interface and one universal optical interface are allowed to be set on the device hardware interface to meet the requirements of all signal communications. The number of external interfaces of receiving end equipment is reduced, the structure of the receiving end equipment is simplified, the external size of the receiving end equipment is reduced due to the fact that different optical signals are prevented from being connected with optical interfaces of the receiving end equipment respectively, the occupied internal space of the equipment and the occupied equipment space required by interface setting are avoided, a single universal interface is arranged to serve as a unified interface of digital data of the equipment, high data communication rate and strong expansibility can be provided for the outside, the miniaturized equipment and classical equipment are allowed to be conveniently butted, so that all-in-one equipment with functions of quantum key distribution, encryption and decryption is formed, and the applicability of the receiving end equipment is enhanced. In addition, the receiving end equipment only needs a single optical fiber channel, so that optical fiber resources can be greatly saved, and the receiving end equipment is more convenient to use.
Although the present invention has been described in connection with the embodiments illustrated in the accompanying drawings, it will be understood by those skilled in the art that the embodiments described above are merely exemplary for illustrating the principles of the present invention and are not intended to limit the scope of the present invention, and that various combinations, modifications and equivalents of the above-described embodiments may be made by those skilled in the art without departing from the spirit and scope of the present invention.
Claims (10)
1. A miniaturized quantum key distribution receiving end device is used for receiving signal light, detecting the signal light and generating a quantum key, wherein the signal light is formed by quantum light signals, synchronous light signals and negotiation light signals through wavelength division multiplexing;
the quantum key distribution receiving end equipment is characterized by comprising a QKD module, a classical quantum wavelength division multiplexing module and a signal interface;
the signal interface comprises only one general interface and one optical interface;
the general interface is connected with the QKD module and is used for allowing digital signals to be communicated to the outside;
the optical interface is connected with the classical quantum wavelength division multiplexing module and is used for allowing optical signals to be communicated to the outside;
the classical quantum wavelength division multiplexing module is connected with the QKD module and is used for demultiplexing the signal light into a quantum optical signal, a synchronous optical signal and a negotiation optical signal;
and the QKD module is used for detecting the quantum optical signal, the synchronous optical signal and the negotiation optical signal and generating the quantum key.
2. The quantum key distribution receiving end device of claim 1, wherein the classical quantum wavelength division multiplexing module comprises a wavelength division multiplexer.
3. The quantum key distribution receiver device of claim 1, wherein the generic interface is a PCIE interface.
4. The quantum key distribution receiving end device of claim 1, wherein the optical interface is an LC/UPC interface.
5. The quantum key distribution receiving end device according to claim 1, wherein the QKD module includes a random number generation unit, a quantum optical signal detection unit, a synchronous optical screening unit, a classical negotiation unit, and a control unit;
the random number generating unit is used for generating a random number;
the quantum optical signal detection unit is used for detecting and decoding the quantum optical signal to generate decoded data;
the synchronous light screening unit is used for detecting the synchronous light signals and generating synchronous electric signals;
the classical negotiation unit is used for detecting the negotiation optical signal and generating a negotiation electrical signal;
the control unit is used for generating the quantum key according to the decoding data and the negotiation electric signal.
6. A quantum key distribution receiver device according to claim 5, wherein: the random number generating unit comprises a random number chip; and/or the classical negotiation unit comprises a photoelectric converter; and/or the synchronous light screening unit comprises a synchronous light detector.
7. The quantum key distribution receiver device of claim 5, wherein the control unit comprises a processor and a memory.
8. The quantum key distribution receiving terminal device according to claim 7, wherein the processor is implemented by means of a separate CPU and FPGA, or by means of a processor with integrated driving functions.
9. The quantum key distribution receiving end device of claim 5, wherein the quantum optical signal detection unit comprises an optical chip, a detector module, a time measurement module, a detector control module, and a decoding control module;
the decoding control module is used for controlling the optical chip;
the optical chip is used for decoding the quantum optical signal to generate a decoded optical signal;
the detector control module is used for controlling the detector module;
the detector module is used for detecting the decoded optical signal and generating a detection electrical signal;
the time measurement module is used for extracting the decoding data from the detection electric signal.
10. A quantum key distribution receiver device according to any of claims 1-9, having a two-dimensional planar dimension of no more than 120mm x 220 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123214653.4U CN217037195U (en) | 2021-12-17 | 2021-12-17 | Miniaturized quantum key distribution receiving terminal equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123214653.4U CN217037195U (en) | 2021-12-17 | 2021-12-17 | Miniaturized quantum key distribution receiving terminal equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217037195U true CN217037195U (en) | 2022-07-22 |
Family
ID=82443653
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123214653.4U Active CN217037195U (en) | 2021-12-17 | 2021-12-17 | Miniaturized quantum key distribution receiving terminal equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217037195U (en) |
-
2021
- 2021-12-17 CN CN202123214653.4U patent/CN217037195U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10009108B2 (en) | Coherent and pulse amplitude modulation in a pluggable optical transceiver | |
| US5818619A (en) | Wireless communication system | |
| JP3487768B2 (en) | Signal transmission equipment | |
| FI124018B (en) | Transceiver unit | |
| CN107579820B (en) | Synchronization device and synchronization method for multi-channel quantum key distribution system | |
| US20240004139A1 (en) | Secured fiber link system | |
| US11888537B2 (en) | Secured fiber link system | |
| US20200386960A1 (en) | Integrated passive optical tap and optical signal termination | |
| CN109194889B (en) | Low-speed signal conversion module for DP interface | |
| JP2007251823A (en) | Optical transmission apparatus, optical transmission system, and optical transmission method | |
| JP2002208896A (en) | Lsi system using semiconductor device | |
| CN217037195U (en) | Miniaturized quantum key distribution receiving terminal equipment | |
| CN116266786A (en) | Quantum key distribution receiving terminal equipment with simplified structure | |
| CN217037196U (en) | Miniaturized QKD equipment | |
| US6333802B1 (en) | Digital signal transmission apparatus | |
| EP3748875B1 (en) | Photoelectric adapters and optical transmission cable capable of receiving and outputting electricity | |
| KR20220065667A (en) | Image test system, test assembly and image capture card | |
| WO2023109630A1 (en) | Fusion method for qkd device and classic device, and all-in-one device | |
| CN116266787A (en) | Transmitting terminal equipment for quantum key distribution with simplified structure | |
| KR102096295B1 (en) | Multi-rate data processing method and apparatus | |
| US9729947B2 (en) | Pluggable optical transceiver providing wavelength tuning information | |
| JP3838087B2 (en) | Optical communication system and optical communication apparatus | |
| KR100343167B1 (en) | Outer connecting apparatus of PDA | |
| JP2002077057A (en) | Optical transmission system and its monitoring method and optical communication unit and device for externally introducing light | |
| US20090182926A1 (en) | Electronic apparatus and information transfer method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |