期刊
APPLIED PHYSICS LETTERS
卷 100, 期 11, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.3691944
关键词
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资金
- Center for Excitonics [DE-SC0001088]
- IARPA
- United States Air Force under Air Force [FA8721-05-C-0002]
We investigated the reset time of superconducting nanowire avalanche photodetectors (SNAPs) based on 30 nm wide nanowires. We studied the dependence of the reset time of SNAPs on the device inductance and discovered that SNAPs can provide a speed-up relative to superconducting nanowire single-photon detectors with the same area but with some limitations: (1) Reducing the series inductance of SNAPs (necessary for the avalanche formation) could result in the detectors operating in an unstable regime, (2) a trade-off exists between maximizing the bias current margin and minimizing the reset time of SNAPs, and (3) reducing the reset time of SNAPs below similar to 1 ns resulted in afterpulsing. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.3691944]
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