Position-Dependent Local Detection Efficiency in a Nanowire Superconducting Single-Photon Detector
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- 作者：J. J. Renema ; Q. Wang ; R. Gaudio ; I. Komen ; K. op 鈥檛 Hoog ; D. Sahin ; A. Schilling ; M. P. van Exter ; A. Fiore ; A. Engel ; M. J. A. de Dood
- 刊名：Nano Letters
- 出版年：2015
- 出版时间：July 8, 2015
- 年：2015
- 卷：15
- 期：7
- 页码：4541-4545
- 全文大小：280K
- ISSN：1530-6992
文摘
We probe the local detection efficiency in a nanowire superconducting single-photon detector along the cross-section of the wire with a far subwavelength resolution. We experimentally find a strong variation in the local detection efficiency of the device. We demonstrate that this effect explains previously observed variations in NbN detector efficiency as a function of device geometry.