| Presentation | 2016-08-09 Study of high sensitive Josephson comparators for very small current detection Yutaka Abe, Kyosuke Sano, Yuki Yamanashi, Nobuyuki Yoshikawa, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | The gray zone of Josephson comparators determine the current sensitivity of readout circuits for superconductor detectors. We are investigating Josephson comparators with very small current sensitivity. In this study, we adjust the threshold current by optimizing the critical current of Josephson junctions composing a Josephson comparator, and minimize the gray zone width by modifying the circuit structure to supply the bias current. We designed Josephson comparators with optimized parameters and evaluated the gray zone and the threshold in simulation and measurement. The minimum gray zone width is 1.5 uA and 0.98 uA in simulation and measurement, respectively. The threshold current is evaluated to be 0 uA and 11.7 uA in simulation and measurement, respectively. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Superconductor integrated circuits / SFQ circuits / comparator / gray zone / Josephson integrated circuits |
| Paper # | SCE2016-23 |
| Date of Issue | 2016-08-01 (SCE) |
| Conference Information | |
| Committee | SCE |
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| Conference Date | 2016/8/8(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Saitama Univ. (Omiya sonic city) |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | Nobuyuki Yoshikawa(Yokohama National Univ.) |
| Vice Chair | |
| Secretary | (National Defense Academy) |
| Assistant | Hiroyuki Akaike(Nagoya Univ.) / Yuki Yamanashi(Yokohama National 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) | Study of high sensitive Josephson comparators for very small current detection |
| Sub Title (in English) | |
| Keyword(1) | Superconductor integrated circuits |
| Keyword(2) | SFQ circuits |
| Keyword(3) | comparator |
| Keyword(4) | gray zone |
| Keyword(5) | Josephson integrated circuits |
| 1st Author's Name | Yutaka Abe |
| 1st Author's Affiliation | Yokohama National University(Yokohama Nat. Univ.) |
| 2nd Author's Name | Kyosuke Sano |
| 2nd Author's Affiliation | Yokohama National University(Yokohama Nat. Univ.) |
| 3rd Author's Name | Yuki Yamanashi |
| 3rd Author's Affiliation | Yokohama National University(Yokohama Nat. Univ.) |
| 4th Author's Name | Nobuyuki Yoshikawa |
| 4th Author's Affiliation | Yokohama National University(Yokohama Nat. Univ.) |
| Date | 2016-08-09 |
| Paper # | SCE2016-23 |
| Volume (vol) | vol.116 |
| Number (no) | SCE-175 |
| Page | pp.pp.57-62(SCE), |
| #Pages | 6 |
| Date of Issue | 2016-08-01 (SCE) |