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Conference on Lasers and Electro-Optics

Superconducting Nanowire Photon-Number-Resolving Detectors Integrated with Current Reservoirs and yTron Readouts

Kai Zou, Yun Meng, Liang Xu, Nan Hu, ZhaoWang, Xiaolong Hu

Published Jan 1, 2021• 0 citations
Publisher

Abstract

We propose and design superconducting nanowire photon-number-resolving detectors integrated with current reservoirs and yTron readouts, which can resolve up to 11 photons with high fidelity.
DOI
10.1364/cleo_qels.2021.fw2p.4

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We propose a novel photon number resolving detector structure with large dynamic range. It consists of the series connection of N superconducting nanowires, each connected in parallel to an integrated resistor. Photon absorption in a wire switches its current to the parallel resistor producing a voltage pulse and the sum of these voltages is measured at the output. The combination of this structure and a high input impedance preamplifier result in linear, high fidelity, and fast photon detection in the range from one to several tens of photons.