| Presentation | 2011-10-12 Origin of dark count in superconducting nanowire single-photon detectors Taro YAMASHITA, Shigehito MIKI, Kazumasa MAKISE, Wei QIU, Hirotaka TERAI, Mikio FUJIWARA, Masahide SASAKI, Zhen WANG, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | We investigated a physical mechanism of the dark count in superconducting nanowire single-photon detectors. The direct-current characteristics and bias-current dependencies of the dark count rate in a wide range of temperatures from 0.5 K to 4 K were measured. As a candidate for the origin of the dark count, we examined two possible mechanisms: (i) the current-assisted unbinding of vortex-antivortex pairs induced by the Berezinskii-Kosterlitz-Thouless transition and (ii) the vortex hopping overcoming the edge barrier of the nanowire. Our results indicate that the unbinding of vortex-antivortex pairs is the dominant origin of the dark count. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | single-photon detector / superconducting thin film / fluctuation |
| Paper # | SCE2011-12 |
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| Conference Information | |
| Committee | SCE |
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| Conference Date | 2011/10/5(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Superconductive Electronics (SCE) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Origin of dark count in superconducting nanowire single-photon detectors |
| Sub Title (in English) | |
| Keyword(1) | single-photon detector |
| Keyword(2) | superconducting thin film |
| Keyword(3) | fluctuation |
| 1st Author's Name | Taro YAMASHITA |
| 1st Author's Affiliation | Advanced ICT Research Institute, National Institute of Information and Communications Technology() |
| 2nd Author's Name | Shigehito MIKI |
| 2nd Author's Affiliation | Advanced ICT Research Institute, National Institute of Information and Communications Technology |
| 3rd Author's Name | Kazumasa MAKISE |
| 3rd Author's Affiliation | Advanced ICT Research Institute, National Institute of Information and Communications Technology |
| 4th Author's Name | Wei QIU |
| 4th Author's Affiliation | Advanced ICT Research Institute, National Institute of Information and Communications Technology |
| 5th Author's Name | Hirotaka TERAI |
| 5th Author's Affiliation | Advanced ICT Research Institute, National Institute of Information and Communications Technology |
| 6th Author's Name | Mikio FUJIWARA |
| 6th Author's Affiliation | Advanced ICT Research Institute, National Institute of Information and Communications Technology |
| 7th Author's Name | Masahide SASAKI |
| 7th Author's Affiliation | Advanced ICT Research Institute, National Institute of Information and Communications Technology |
| 8th Author's Name | Zhen WANG |
| 8th Author's Affiliation | Advanced ICT Research Institute, National Institute of Information and Communications Technology |
| Date | 2011-10-12 |
| Paper # | SCE2011-12 |
| Volume (vol) | vol.111 |
| Number (no) | 230 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |