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Conferences > ACPC > 2018 > M2I > M2I.3
  • Asia Communications and Photonics Conference (ACP) 2018
  • OSA Technical Digest (Optica Publishing Group, 2018),
  • paper M2I.3

RF-amplifier-free superconducting nanowire single-photon detector system

Xiaoming Chi, Kai Zou, Nan Hu, Julien Zichi, Val Zwiller, and Xiaolong Hu

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Abstract

We used a superconducting nanowire single photon detector integrated with a current reservoir in a closed-cycle cryocooler to demonstrate RF-amplifier-free photon counting. By removing the RF amplifiers, we completely eliminated the capacitor-coupling effect, consequently increased the switching current from 48.5 μA to 50.5 μA and increased the device efficiency from 26% to 32%. The L/R time constant was reduced by a factor of 1.27.

© 2018 The Author(s)

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