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Multi-Element Superconducting Nanowire Single-Photon Detector

2007; IEEE Council on Superconductivity; Volume: 17; Issue: 2 Linguagem: Inglês

10.1109/tasc.2007.897372

1558-2515

Eric A. Dauler, Bryan S. Robinson, Andrew J. Kerman, Joel K. W. Yang, E.K.M. Rosfjord, Vikas Anant, B. Voronov, Gregory Goltsman, Karl K. Berggren,

Mechanical and Optical Resonators

A multi-element superconducting nanowire single photon detector (MESNSPD) is presented that consists of multiple independently-biased superconducting nanowire single photon detector (SNSPD) elements that form a continuous active area. A two-element SNSPD has been fabricated and tested, showing no measurable crosstalk between the elements, sub-50-ps relative timing jitter, and four times the maximum counting rate of a single SNSPD with the same active area. The MESNSPD can have a larger active area and higher speed than a single-element SNSPD and the input optics can be designed so that the detector provides spatial, spectral or photon number resolution.