Position-dependent local detection efficiency in a nanowire superconducting single-photon detector

J.J. Renema, Q, Wang, R. Gaudio, I. Komen, K.P.M. Hoog, op 't, D. Sahin, A. Schilling, M.P. Exter, van, A. Fiore, A. Engel, M.J.A. Dood, de

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Abstract

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.
Original languageEnglish
Pages (from-to)4541-4545
Number of pages5
JournalNano Letters
Volume15
DOIs
Publication statusPublished - 2015

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