Jitter characterization of a dual-readout SNSPD

Document Type

Article

Publication Date

8-1-2019

Abstract

To better understand the origins of the timing resolution, also known as jitter, of superconducting nanowire single-photon detectors (SNSPDs), we have performed timing characterizations of a niobium nitride SNSPD with a dual-ended readout. By simultaneously measuring both readout pulses along with an optical timing reference signal, we are able to quantify each independent contribution to the total measured jitter. In particular, we are able to determine values for the jitter due to the stochastic nature of hotspot formation and the jitter due to the variation of the photon detection location along the length of the nanowire. We compare the results of this analysis for measurements at temperatures of 1.5 and 4.5 K.

Publication Title

IEEE Transactions on Applied Superconductivity

Volume

29

Issue

5

Digital Object Identifier (DOI)

10.1109/TASC.2019.2895609

ISSN

10518223

E-ISSN

15582515

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