Nano-optical observation of cascade switching in a parallel superconducting nanowire single photon detector

Robert M. Heath; Michael G. Tanner; Alessandro Casaburi; Mark G. Webster; Lara San Emeterio Alvarez; Weitao Jiang; Zoe H. Barber; Richard J. Warburton; Robert H. Hadfield

doi:10.1063/1.4865199

Nano-optical observation of cascade switching in a parallel superconducting nanowire single photon detector

Robert M. Heath, Michael G. Tanner, Alessandro Casaburi, Mark G. Webster, Lara San Emeterio Alvarez, Weitao Jiang, Zoe H. Barber, Richard J. Warburton, Robert H. Hadfield

School of Engineering & Physical Sciences

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Abstract

The device physics of parallel-wire superconducting nanowire single photon detectors is based on a cascade process. Using nano-optical techniques and a parallel wire device with spatially separate pixels, we explicitly demonstrate the single- and multi-photon triggering regimes. We develop a model for describing efficiency of a detector operating in the arm-trigger regime. We investigate the timing response of the detector when illuminating a single pixel and two pixels. We see a change in the active area of the detector between the two regimes and find the two-pixel trigger regime to have a faster timing response than the one-pixel regime. (C) 2014 AIP Publishing LLC.

Original language	English
Article number	063503
Number of pages	5
Journal	Applied Physics Letters
Volume	104
Issue number	6
DOIs	https://doi.org/10.1063/1.4865199
Publication status	Published - 10 Feb 2014

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10.1063/1.4865199

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Heath, R. M., Tanner, M. G., Casaburi, A., Webster, M. G., Alvarez, L. S. E., Jiang, W., Barber, Z. H., Warburton, R. J., & Hadfield, R. H. (2014). Nano-optical observation of cascade switching in a parallel superconducting nanowire single photon detector. Applied Physics Letters, 104(6), [063503]. https://doi.org/10.1063/1.4865199

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abstract = "The device physics of parallel-wire superconducting nanowire single photon detectors is based on a cascade process. Using nano-optical techniques and a parallel wire device with spatially separate pixels, we explicitly demonstrate the single- and multi-photon triggering regimes. We develop a model for describing efficiency of a detector operating in the arm-trigger regime. We investigate the timing response of the detector when illuminating a single pixel and two pixels. We see a change in the active area of the detector between the two regimes and find the two-pixel trigger regime to have a faster timing response than the one-pixel regime. (C) 2014 AIP Publishing LLC.",

author = "Heath, {Robert M.} and Tanner, {Michael G.} and Alessandro Casaburi and Webster, {Mark G.} and Alvarez, {Lara San Emeterio} and Weitao Jiang and Barber, {Zoe H.} and Warburton, {Richard J.} and Hadfield, {Robert H.}",

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Nano-optical observation of cascade switching in a parallel superconducting nanowire single photon detector. / Heath, Robert M.; Tanner, Michael G.; Casaburi, Alessandro; Webster, Mark G.; Alvarez, Lara San Emeterio; Jiang, Weitao; Barber, Zoe H.; Warburton, Richard J.; Hadfield, Robert H.

In: Applied Physics Letters, Vol. 104, No. 6, 063503, 10.02.2014.

Research output: Contribution to journal › Article

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AU - Tanner, Michael G.

AU - Casaburi, Alessandro

AU - Webster, Mark G.

AU - Alvarez, Lara San Emeterio

AU - Jiang, Weitao

AU - Barber, Zoe H.

AU - Warburton, Richard J.

AU - Hadfield, Robert H.

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AB - The device physics of parallel-wire superconducting nanowire single photon detectors is based on a cascade process. Using nano-optical techniques and a parallel wire device with spatially separate pixels, we explicitly demonstrate the single- and multi-photon triggering regimes. We develop a model for describing efficiency of a detector operating in the arm-trigger regime. We investigate the timing response of the detector when illuminating a single pixel and two pixels. We see a change in the active area of the detector between the two regimes and find the two-pixel trigger regime to have a faster timing response than the one-pixel regime. (C) 2014 AIP Publishing LLC.

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