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Superconducting Qubits Open Quantum Systems Decoherence Photonic Quantum Computing

Optically probing the detection mechanism in a molybdenum silicide superconducting nanowire single-photon detector

arXiv

Authors: Misael Caloz, Boris Korzh, Nuala Timoney, Markus Weiss, Stefano Gariglio, Richard J. Warburton, Christian Schönenberger, Jelmer Renema, Hugo Zbinden, Felix Bussieres

Year

2016

Paper ID

42216

Status

Preprint

Abstract Read

~2 min

Abstract Words

101

Citations

N/A

Abstract

We experimentally investigate the detection mechanism in a meandered molybdenum silicide (MoSi) superconducting nanowire single-photon detector by characterising the detection probability as a function of bias current in the wavelength range of 750 to 2050 nm. Contrary to some previous observations on niobium nitride (NbN) or tungsten silicide (WSi) detectors, we find that the energy-current relation is nonlinear in this range. Furthermore, thanks to the presence of a saturated detection efficiency over the whole range of wavelengths, we precisely quantify the shape of the curves. This allows a detailed study of their features, which are indicative of both Fano fluctuations and position-dependent effects.

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We experimentally investigate the detection mechanism in a meandered molybdenum silicide (MoSi) superconducting nanowire single-photon detector by characterising the detection...

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References & Citation Signals

[1] DOI https://doi.org/arXiv:1611.08238 [2] arXiv https://arxiv.org/abs/1611.08238 [3] Publisher https://arxiv.org/abs/1611.08238

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