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Multi-Element Superconducting Nanowire Single-Photon Detector

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9 Author(s)
Dauler, E.A. ; Massachusetts Inst. of Technol., Cambridge ; Robinson, B.S. ; Kerman, A.J. ; Yang, Joel K.W.
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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.

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Applied Superconductivity, IEEE Transactions on  (Volume:17 ,  Issue: 2 )