| Presentation | 2021-01-19 Reducing pump power for broadband impedance-matched Josephson parametric amplifiers Yoshiro Urade, Kun Zuo, Syotaro Baba, C. W. Sandbo Chang, Koh-ichi Nittoh, Kunihiro Inomata, Zhirong Lin, Tsuyoshi Yamamoto, Yasunobu Nakamura, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Josephson parametric amplifiers (JPAs) with quantum-limited low-noise property are crucial devices for fast and high-fidelity readout of superconducting qubits. Further qubit integrations require JPAs with broad amplification bandwidth and low pump power. We report improvement of the pump efficiency of our broadband impedance-matched JPAs. The combination of (i)~improved coupling structure between the pump waveguide and the SQUID of the JPA, and (ii)~implementation of the resonant structure in the pump waveguide, enables pumping of the JPA with efficiency 100 times higher than that of our previous device. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Josephson parametric amplifier / superconducting qubit / superconducting quantum computer |
| Paper # | SCE2020-21 |
| Date of Issue | 2021-01-12 (SCE) |
| Conference Information | |
| Committee | SCE |
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| Conference Date | 2021/1/19(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | Satoshi Kohjiro(AIST) |
| Vice Chair | |
| Secretary | (NICT) |
| Assistant | Hiroyuki Akaike(Daido Univ.) |
| Paper Information | |
| Registration To | Technical Committee on Superconductive Electronics |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Reducing pump power for broadband impedance-matched Josephson parametric amplifiers |
| Sub Title (in English) | |
| Keyword(1) | Josephson parametric amplifier |
| Keyword(2) | superconducting qubit |
| Keyword(3) | superconducting quantum computer |
| 1st Author's Name | Yoshiro Urade |
| 1st Author's Affiliation | RIKEN(RIKEN) |
| 2nd Author's Name | Kun Zuo |
| 2nd Author's Affiliation | RIKEN(RIKEN) |
| 3rd Author's Name | Syotaro Baba |
| 3rd Author's Affiliation | The University of Tokyo(Univ. Tokyo) |
| 4th Author's Name | C. W. Sandbo Chang |
| 4th Author's Affiliation | The University of Tokyo(Univ. Tokyo) |
| 5th Author's Name | Koh-ichi Nittoh |
| 5th Author's Affiliation | RIKEN(RIKEN) |
| 6th Author's Name | Kunihiro Inomata |
| 6th Author's Affiliation | National Institute of Advanced Industrial Science and Technology(AIST) |
| 7th Author's Name | Zhirong Lin |
| 7th Author's Affiliation | Shanghai Institute of Microsystem and Information Technology(SIMIT) |
| 8th Author's Name | Tsuyoshi Yamamoto |
| 8th Author's Affiliation | NEC Corporation(NEC) |
| 9th Author's Name | Yasunobu Nakamura |
| 9th Author's Affiliation | RIKEN(RIKEN) |
| Date | 2021-01-19 |
| Paper # | SCE2020-21 |
| Volume (vol) | vol.120 |
| Number (no) | SCE-313 |
| Page | pp.pp.24-29(SCE), |
| #Pages | 6 |
| Date of Issue | 2021-01-12 (SCE) |