JP2007081289A - 銅酸化物高温超伝導体固有ジョセフソン接合を用いた量子ビット - Google Patents
銅酸化物高温超伝導体固有ジョセフソン接合を用いた量子ビット Download PDFInfo
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- JP2007081289A JP2007081289A JP2005270031A JP2005270031A JP2007081289A JP 2007081289 A JP2007081289 A JP 2007081289A JP 2005270031 A JP2005270031 A JP 2005270031A JP 2005270031 A JP2005270031 A JP 2005270031A JP 2007081289 A JP2007081289 A JP 2007081289A
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- temperature superconductor
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- copper oxide
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Abstract
【解決手段】 この出願の発明の量子ビットは、銅酸化物高温超伝導体を用いて形成した固有ジョセフソン接合により構成されることを特徴とする。酸化物高温超伝導体としては、Bi(ビスマス)系銅酸化物高温超伝導体、Tl(タリウム)系銅酸化物高温超伝導体、Y(イットリウム)系銅酸化物高温超伝導体のいずれかを用いることができる。
【選択図】図3
Description
J. M. Martinia, et al., Phys. Rev. Lett. 89. 117901 (2002)
Claims (9)
- 銅酸化物高温超伝導体を用いて形成した固有ジョセフソン接合により構成されることを特徴とする量子ビット。
- 銅酸化物高温超伝導体として、Bi(ビスマス)系銅酸化物高温超伝導体を用いることを特徴とする請求項1記載の量子ビット。
- Bi(ビスマス)系銅酸化物高温超伝導体が、Bi2Sr2CaCu2O8+δであることを特徴とする請求項2記載の量子ビット。
- Bi(ビスマス)系銅酸化物高温超伝導体が、Bi2Sr2Ca2Cu3O10+δであることを特徴とする請求項2記載の量子ビット。
- Bi(ビスマス)系銅酸化物高温超伝導体が、Bi2Sr2CuO6+δであることを特徴とする請求項2記載の量子ビット。
- 銅酸化物高温超伝導体として、Tl(タリウム)系銅酸化物高温超伝導体を用いることを特徴とする請求項1記載の量子ビット。
- Tl(タリウム)系銅酸化物高温超伝導体が、Tl2Ba2CaCu2O8であることを特徴とする請求項6記載の量子ビット。
- 銅酸化物高温超伝導体として、Y(イットリウム)系銅酸化物高温超伝導体を用いることを特徴とする請求項1記載の量子ビット。
- Y(イットリウム)系銅酸化物高温超伝導体が、YBa2Cu3O7−δであることを特徴とする請求項8記載の量子ビット。
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JP2005270031A JP5233039B2 (ja) | 2005-09-16 | 2005-09-16 | 銅酸化物高温超伝導体固有ジョセフソン接合を用いた量子ビット |
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JP2005270031A JP5233039B2 (ja) | 2005-09-16 | 2005-09-16 | 銅酸化物高温超伝導体固有ジョセフソン接合を用いた量子ビット |
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JP2007081289A true JP2007081289A (ja) | 2007-03-29 |
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JP2005252277A (ja) * | 2005-03-29 | 2005-09-15 | Japan Science & Technology Agency | 抵抗シャント固有ジョセフソン接合装置を用いたオンチップ検出器 |
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Patent Citations (1)
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JP2005252277A (ja) * | 2005-03-29 | 2005-09-15 | Japan Science & Technology Agency | 抵抗シャント固有ジョセフソン接合装置を用いたオンチップ検出器 |
Non-Patent Citations (6)
Title |
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JPN6012007995; 猪股 邦宏: '「固有ジョセフソン接合におけるマクロスコピックカンタムトンネリングに関する研究' 博士学位論文の要旨及び審査結果の要旨 , 2004, 第125-129頁, 東北大学 * |
JPN6012046002; Shiro KAWABATA et al.: '"Effect of zero-energy bound states on macroscopic quantum tunneling in high-Tc superconductor junct' Physical Review B Vol.72, No.5, 20050819, p.052506-1〜052506-4, The American Physical Society * |
JPN6012046004; Joachim ANKERHOLD et al.: '"Enhancement of Macroscopic Quantum Tunneling by Landau-Zener Transitions"' Physical Review Letters Vol.91, No.1, 20030704, p.016803-1〜016803-4, The American Physical Society * |
JPN6012046006; John M. MARTINIS et al.: '"Rabi Oscillations in a Large Josephson-Junction Qubit"' Physical Review Letters Vol.89, No.11, 20020909, p.117901-1〜117901-4, The American Physical Society * |
JPN6012046008; S. KAWABATA et al.: '"Macroscopic quantum tunneling and quasiparticle dissipation in d-wave superconductor Josephson junc' Physical Review B Vol.70, No.13, 20041029, p.132505-1〜132505-4, The American Physical Society * |
JPN6012046009; Yoshihiko TAKANO et al.: '"d-like symmetry of the order parameter and intrinsic Josephson effects in Bi2Sr2CaCu2O8+delta cross-wh' Physical Review B Vol.65, No.14, 20020404, p.140513-1〜140513-4, The American Physical Society * |
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