dc.contributor.author | Zhao, Qing-Yuan | |
dc.contributor.author | Santavicca, Daniel F | |
dc.contributor.author | Zhu, Di | |
dc.contributor.author | Noble, Brian | |
dc.contributor.author | Berggren, Karl K | |
dc.date.accessioned | 2021-10-27T20:08:54Z | |
dc.date.available | 2021-10-27T20:08:54Z | |
dc.date.issued | 2018 | |
dc.identifier.uri | https://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.iso | en | |
dc.publisher | AIP Publishing | |
dc.relation.isversionof | 10.1063/1.5040150 | |
dc.rights | Creative Commons Attribution-Noncommercial-Share Alike | |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-sa/4.0/ | |
dc.source | arXiv | |
dc.title | A distributed electrical model for superconducting nanowire single photon detectors | |
dc.type | Article | |
dc.contributor.department | Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science | |
dc.relation.journal | Applied Physics Letters | |
dc.eprint.version | Original manuscript | |
dc.type.uri | http://purl.org/eprint/type/JournalArticle | |
eprint.status | http://purl.org/eprint/status/NonPeerReviewed | |
dc.date.updated | 2019-05-08T17:08:58Z | |
dspace.orderedauthors | Zhao, Q-Y; Santavicca, DF; Zhu, D; Noble, B; Berggren, KK | |
dspace.date.submission | 2019-05-08T17:08:59Z | |
mit.journal.volume | 113 | |
mit.journal.issue | 8 | |
mit.metadata.status | Authority Work and Publication Information Needed | |