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dc.contributor.authorZhao, Qing-Yuan
dc.contributor.authorSantavicca, Daniel F
dc.contributor.authorZhu, Di
dc.contributor.authorNoble, Brian
dc.contributor.authorBerggren, Karl K
dc.date.accessioned2021-10-27T20:08:54Z
dc.date.available2021-10-27T20:08:54Z
dc.date.issued2018
dc.identifier.urihttps://hdl.handle.net/1721.1/134735
dc.description.abstract© 2018 Author(s). To analyze the switching dynamics and output performance of a superconducting nanowire single photon detector (SNSPD), the nanowire is usually modelled as an inductor in series with a time-varying resistor induced by the absorption of a photon. Our recent experimental results show that, due to the effect of kinetic inductance, for a SNSPD made of a nanowire of sufficient length, its geometrical length can be comparable to or even longer than the effective wavelength of frequencies contained in the output pulse. In other words, a superconducting nanowire can behave as a distributed transmission line so that the readout pulse depends on the photon detection location and the transmission line properties of the nanowire. Here, we develop a distributed model for a superconducting nanowire and apply it to simulate the output performance of a long nanowire designed into a coplanar waveguide. We compare this coplanar waveguide geometry to a conventional meander nanowire geometry. The simulation results agree well with our experimental observations. With this distributed model, we discuss the importance of microwave design of a nanowire and how impedance matching can affect the output pulse shape. We also discuss how the distributed model affects the growth and decay of the photon-triggered resistive hotspot.
dc.language.isoen
dc.publisherAIP Publishing
dc.relation.isversionof10.1063/1.5040150
dc.rightsCreative Commons Attribution-Noncommercial-Share Alike
dc.rights.urihttp://creativecommons.org/licenses/by-nc-sa/4.0/
dc.sourcearXiv
dc.titleA distributed electrical model for superconducting nanowire single photon detectors
dc.typeArticle
dc.contributor.departmentMassachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
dc.relation.journalApplied Physics Letters
dc.eprint.versionOriginal manuscript
dc.type.urihttp://purl.org/eprint/type/JournalArticle
eprint.statushttp://purl.org/eprint/status/NonPeerReviewed
dc.date.updated2019-05-08T17:08:58Z
dspace.orderedauthorsZhao, Q-Y; Santavicca, DF; Zhu, D; Noble, B; Berggren, KK
dspace.date.submission2019-05-08T17:08:59Z
mit.journal.volume113
mit.journal.issue8
mit.metadata.statusAuthority Work and Publication Information Needed


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