Theory of quantum synchronization in a small Josephson junction array
| Project/Area Number |
24510146
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Nanostructural science
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| Research Institution | National Institute of Advanced Industrial Science and Technology |
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Principal Investigator |
KAWABATA SHIRO 独立行政法人産業技術総合研究所, 電子光技術研究部門, 主任研究員 (30356852)
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| Co-Investigator(Renkei-kenkyūsha) |
KATO Takeo 東京大学, 物性研究所, 准教授 (80332956)
KAKEYA Itsuhiro 京都大学, 工学研究科, 准教授 (80302389)
KASHIWAYA Hiromi 産業技術総合研究所, 計測フロンティア研究部門, 主任研究員 (60443181)
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| Project Period (FY) |
2012-04-01 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000)
Fiscal Year 2014: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2013: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2012: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
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| Keywords | 巨視的量子現象 / 同期現象 / テラヘルツ波 / ジョセフソン接合 / メタマテリアル / 高温超伝導 / 非線形光学 / 量子コンピュータ / 固有ジョセフソン接合 / 高温超伝導体 / 回路量子電気力学 / テラヘルツ発振 / 量子ビット / 多バンド超伝導 / 鉄系超伝導 / 巨視的量子トンネル現象 / 熱伝導 / 多ギャップ超伝導 / 熱輸送 / 巨視的量子トンネル効果 |
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| Outline of Final Research Achievements |
We have theoretically and numerically investigated the synchronization and macroscopic quantum phenomena in a Josephson junction array. By solving the phase, Maxwell, and heat diffusion equation simultaneously, we found that the THz radiation power from the high-Tc superconductor intrinsic Josephson junction can be drastically enhanced by the local heating. We have also investigated the macroscopic quantum phenomena in multi-band superconductor junctions as well as the nonlinear optical responce in superconductor quantum metamaterial based on a superconductor qubit array.
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Report
(4 results)
Research Products
(37 results)
