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Scientific article
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English

Direct measurement of the recovery time of superconducting nanowire single-photon detectors

Published inJournal of Applied Physics, vol. 128, p. 1-7; 074504
Publication date2020
Abstract

One of the key properties of single-photon detectors is their recovery time, i.e. the time required for the detector to recover its nominal efficiency. In the case of superconducting nanowire single-photon detectors (SNSPDs), which can feature extremely short recovery times in free-running mode, a precise characterization of this recovery time and its time dynamics is essential for many quantum optics or quantum communication experiments. We introduce a fast and simple method to characterize precisely the recovery time of SNSPDs. It provides full information about the recovery of the efficiency in time for a single or several consecutive detections. We also show how the method can be used to gain insight into the behavior of the bias current inside the nanowire after a detection, which allows predicting the behavior of the detector and its efficiency in any practical experiment using these detectors.

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Citation (ISO format)
AUTEBERT, Claire et al. Direct measurement of the recovery time of superconducting nanowire single-photon detectors. In: Journal of Applied Physics, 2020, vol. 128, p. 1–7. doi: 10.1063/5.0007976
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ISSN of the journal0021-8979
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Creation08/27/2020 11:39:00 AM
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