JP7441581B2 - 量子コンピューティング・デバイス用の超伝導共振器と一体化されたゲート電圧調整可能電子システム - Google Patents
量子コンピューティング・デバイス用の超伝導共振器と一体化されたゲート電圧調整可能電子システム Download PDFInfo
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Description
ここで、Φ0は磁束量子であり、IcはJJスイッチの臨界電流である。一例では、1μAの臨界電流では、0.3nH(ナノヘンリ)のジョセフソン・インダクタンスとなり、10nAの臨界電流では、30nHのジョセフソン・インダクタンスとなる。
量子井戸 障壁
InAs AlxGa1-xSb
InAs InxGa1-xAs
GaAs AlxGa1-xAs
Ge SixGe1-x
Si SixGe1-x
SiyGe1-y SixGe1-x
HgTe HgxCd1-xTe
InSb InxAl1-xSb
InxGa1-xAs InyAl1-yAs
InxGa1-xAs InyGa1-yAs
Claims (16)
- 超伝導結合デバイスであって、
共振器構造であって、第1の量子ビットに容量結合されるように構成された第1の端部、および第2の量子ビットに容量結合されるように構成された第2の端部を有する、前記共振器構造と、
前記共振器構造に結合された電子システムと、
前記電子システムの一部に近接して配置されたゲートと、
を備え、前記電子システムおよび前記ゲートが、スイッチを形成する1つまたは複数の所定の位置で前記共振器構造に割り込むように構成されており、前記ゲートが、ゲート電圧を受け取り、前記ゲート電圧に基づいて前記電子システムのインダクタンスを変化させるように構成され、前記インダクタンスの前記変化により、前記共振器構造の特性周波数の変化をもたらして、前記第1の量子ビットと前記第2の量子ビットとの間の結合の強度を変化させるように前記共振器構造を誘導するように構成された、超伝導結合デバイス。 - 前記インダクタンスの前記変化が、前記ゲートが前記電子システムの臨界電流を変化させた結果である、請求項1に記載の超伝導結合デバイス。
- 量子ビット間の結合は、前記ゲート電圧の調整を介して、段階的に調整可能である、請求項1または2に記載の超伝導結合デバイス。
- 前記共振器構造の前記特性周波数の前記変化が、前記第1の量子ビットと前記第2の量子ビットとの間の結合の前記強度の前記変化を可能にする、請求項1ないし3の何れか一項に記載の超伝導結合デバイス。
- 前記ゲート電圧が、高い臨界電流を伴う低インダクタンス状態と、低い臨界電流を伴う高インダクタンス状態との間で前記スイッチを変化させるように構成されている、請求項1ないし3の何れか一項に記載の超伝導結合デバイス。
- 前記共振器構造の少なくとも一部が超伝導材料で形成されている、請求項1ないし5の何れか一項に記載の超伝導結合デバイス。
- 前記ゲートが金属材料または超伝導材料で形成されている、請求項1ないし6の何れか一項に記載の超伝導結合デバイス。
- 前記共振器構造のシャント部分によって前記共振器構造に結合された接地面をさらに備える、請求項1ないし6の何れか一項に記載の超伝導結合デバイス。
- 前記共振器構造の前記シャント部分が前記電子システムを含む、請求項8に記載の超伝導結合デバイス。
- 前記電子システムが、前記共振器構造の第1の部分と前記共振器構造の第2の部分との間に結合されている、請求項1ないし9の何れか一項に記載の超伝導結合デバイス。
- 基板構造をさらに備え、前記電子システムが前記基板構造の表面に配置されている、請求項1ないし10の何れか一項に記載の超伝導結合デバイス。
- 前記電子システム上に配置された絶縁体をさらに備え、前記ゲートが絶縁構造上に配置されている、請求項11に記載の超伝導結合デバイス。
- 前記電子システムが、第1の障壁材料と第2の障壁材料との間に配置された量子井戸材料を含む、請求項11に記載の超伝導結合デバイス。
- 前記電子システムが、半導体材料またはグラフェン材料のうちの少なくとも1つを含む、請求項1ないし13の何れか一項に記載の超伝導結合デバイス。
- 方法であって、
共振器構造の第1の端部を第1の量子ビットに容量結合することと、
前記共振器構造の第2の端部を第2の量子ビットに容量結合することと、
電子システムを前記共振器構造に結合することと、
前記電子システムの一部に近接してゲートを配置することと、
前記電子システムおよび前記ゲートによって、スイッチを形成する1つまたは複数の所定の位置で前記共振器構造に割り込むことと、
前記ゲートによってゲート電圧を受け取ることと、
前記ゲート電圧に基づいて前記電子システムのインダクタンスを変化させることであって、前記インダクタンスの前記変化により、前記共振器構造の特性周波数の変化をもたらして、前記第1の量子ビットと前記第2の量子ビットとの間の結合の強度を変化させるように前記共振器構造を誘導する、前記インダクタンスを変化させることと、
を含む方法。 - リソグラフィ構成要素を含む超伝導体製造システムであって、ダイに対して動作させた場合に、
共振器構造の第1の端部を第1の量子ビットに容量結合することと、
前記共振器構造の第2の端部を第2の量子ビットに容量結合することと、
電子システムを前記共振器構造に結合することと、
前記電子システムの一部に近接してゲートを配置することと、
前記電子システムおよび前記ゲートによって、スイッチを形成する1つまたは複数の所定の位置で前記共振器構造に割り込むことであって、前記ゲートが、ゲート電圧を受け取り、前記ゲート電圧に基づいて前記電子システムのインダクタンスを変化させるように構成され、前記インダクタンスの前記変化により、前記共振器構造の特性周波数の変化をもたらして、前記第1の量子ビットと前記第2の量子ビットとの間の結合の強度を変化させるように前記共振器構造を誘導する、前記割り込むことと、
を含む動作を実行する超伝導体デバイスを製造する、超伝導体製造システム。
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