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Article: Investigations of afterpulsing and detection efficiency recovery in superconducting nanowire single-photon detectors

TitleInvestigations of afterpulsing and detection efficiency recovery in superconducting nanowire single-photon detectors
Authors
Issue Date2013
Citation
Journal of Applied Physics, 2013, v. 113, n. 21, article no. 213102 How to Cite?
AbstractWe report on the observation of a non-uniform dark count rate in Superconducting Nanowire Single Photon Detectors (SNSPDs), specifically focusing on an afterpulsing effect present when the SNSPD is operated at a high bias current regime. The afterpulsing exists for real detection events (triggered by input photons) as well as for dark counts (no laser input). In our standard set-up, the afterpulsing is most likely to occur at around 180 ns following a detection event, for both real counts and dark counts. We characterize the afterpulsing behavior and speculate that it is not due to the SNSPD itself but rather the amplifiers used to boost the electrical output signal from the SNSPD. We show that the afterpulsing indeed disappears when we use a different amplifier with a better low frequency response. We also examine the short-lived enhancement of detection efficiency during the recovery of the SNSPD due to temporary perturbation of the bias and grounding conditions. © 2013 AIP Publishing LLC.
Persistent Identifierhttp://hdl.handle.net/10722/285709
ISSN
2023 Impact Factor: 2.7
2023 SCImago Journal Rankings: 0.649
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorBurenkov, Viacheslav-
dc.contributor.authorXu, He-
dc.contributor.authorQi, Bing-
dc.contributor.authorHadfield, Robert H.-
dc.contributor.authorLo, Hoi Kwong-
dc.date.accessioned2020-08-18T04:56:26Z-
dc.date.available2020-08-18T04:56:26Z-
dc.date.issued2013-
dc.identifier.citationJournal of Applied Physics, 2013, v. 113, n. 21, article no. 213102-
dc.identifier.issn0021-8979-
dc.identifier.urihttp://hdl.handle.net/10722/285709-
dc.description.abstractWe report on the observation of a non-uniform dark count rate in Superconducting Nanowire Single Photon Detectors (SNSPDs), specifically focusing on an afterpulsing effect present when the SNSPD is operated at a high bias current regime. The afterpulsing exists for real detection events (triggered by input photons) as well as for dark counts (no laser input). In our standard set-up, the afterpulsing is most likely to occur at around 180 ns following a detection event, for both real counts and dark counts. We characterize the afterpulsing behavior and speculate that it is not due to the SNSPD itself but rather the amplifiers used to boost the electrical output signal from the SNSPD. We show that the afterpulsing indeed disappears when we use a different amplifier with a better low frequency response. We also examine the short-lived enhancement of detection efficiency during the recovery of the SNSPD due to temporary perturbation of the bias and grounding conditions. © 2013 AIP Publishing LLC.-
dc.languageeng-
dc.relation.ispartofJournal of Applied Physics-
dc.titleInvestigations of afterpulsing and detection efficiency recovery in superconducting nanowire single-photon detectors-
dc.typeArticle-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1063/1.4807833-
dc.identifier.scopuseid_2-s2.0-84879394480-
dc.identifier.volume113-
dc.identifier.issue21-
dc.identifier.spagearticle no. 213102-
dc.identifier.epagearticle no. 213102-
dc.identifier.isiWOS:000320674500003-
dc.identifier.issnl0021-8979-

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