Electrothermal simulation of superconducting nanowire avalanche photodetectors

Author(s)
Marsili, Francesco; Najafi, Faraz; Herder, Charles Henry; Berggren, Karl K.
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Abstract
We developed an electrothermal model of NbN superconducting nanowire avalanche photodetectors (SNAPs) on sapphire substrates. SNAPs are single-photon detectors consisting of the parallel connection of N superconducting nanowires. We extrapolated the physical constants of the model from experimental data and we simulated the time evolution of the device resistance, temperature and current by solving two coupled electrical and thermal differential equations describing the nanowires. The predictions of the model were in good quantitative agreement with the experimental results.
Date issued
2011-03
URI
http://hdl.handle.net/1721.1/74012
Department
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
Journal
Applied Physics Letters
Publisher
American Institute of Physics (AIP)
Citation
Marsili, Francesco et al. “Electrothermal Simulation of Superconducting Nanowire Avalanche Photodetectors.” Applied Physics Letters 98.9 (2011): 093507. © 2011 American Institute of Physics
Version: Final published version
ISSN
0003-6951
1077-3118
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