JP6066314B2 - 量子ビットの構成方法 - Google Patents
量子ビットの構成方法 Download PDFInfo
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Description
以下、実施例を用いて説明する。図3は、実施例における量子ビットの構成方法を実施する装置の構成を示す構成図である。この装置は、例えば、走査型近接場光顕微鏡(NSOM)より構成し、この顕微鏡のプローブ301の先端に微小なダイヤモンド素子302を固定する。ダイヤモンド素子302は、半径が数十nmであり、単一NV中心を備えている。ダイヤモンド素子302は、ナノダイヤモンド(非特許文献4参照)、もしくはFIB(Focused Ion Beam)によって切り出したバルクダイヤモンド(非特許文献5)から構成すればよい。
Claims (3)
- 1以上の整数のスピンを持つ整数スピン系に量子二準位系を結合させる第1ステップと、
前記整数スピン系に前記量子二準位系を結合させた状態で得られる磁場に依存しない固有エネルギーを持つ固有状態のうち2つの第1固有状態および第2固有状態を用いて量子ビットを構成する第2ステップと
を備え、
前記整数スピン系は、NV中心を備えるダイヤモンド素子が備える電子スピンから構成し、
前記量子二準位系は、超伝導磁束量子ビットにより構成し、
前記第1ステップでは、前記ダイヤモンド素子を前記超伝導磁束量子ビットに近づけることで、前記整数スピン系に前記量子二準位系を結合させ、
前記第2ステップでは、前記整数スピン系にマイクロ波を照射することで前記第1固有状態と前記第2固有状態とから前記量子ビットを構成することを特徴とする量子ビットの構成方法。 - 請求項1記載の量子ビットの構成方法において、
前記第2ステップでは、前記第1固有状態と前記第2固有状態とを所望の状態で重ね合わせることで、前記量子ビットを構成することを特徴とする量子ビットの構成方法。 - 請求項1または2記載の量子ビットの構成方法において、
前記第2ステップでは、最もエネルギーが低い前記第1固有状態と3番目にエネルギーが低い前記第2固有状態とを用いて量子ビットを構成することを特徴とする量子ビットの構成方法。
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