Optical Single-Photon Detection in Micrometer-Scale NbN Bridges

Yu P. Korneeva; D. Yu Vodolazov; A. V. Semenov; I. N. Florya; N. Simonov; E. Baeva; A. A. Korneev; G. N. Goltsman; T. M. Klapwijk

doi:10.1103/PhysRevApplied.9.064037

Optical Single-Photon Detection in Micrometer-Scale NbN Bridges

Yu P. Korneeva, D. Yu Vodolazov, A. V. Semenov, I. N. Florya, N. Simonov, E. Baeva, A. A. Korneev, G. N. Goltsman, T. M. Klapwijk

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83 Citations (Scopus)

Abstract

We demonstrate experimentally that single-photon detection can be achieved in micrometer-wide NbN bridges, with widths ranging from 0.53 to 5.15 μm and for photon wavelengths of 408 to 1550 nm. The microbridges are biased with a dc current close to the experimental critical current, which is estimated to be about 50% of the theoretically expected depairing current. These results offer an alternative to the standard superconducting single-photon detectors, based on nanometer-scale nanowires implemented in a long meandering structure. The results are consistent with improved theoretical modeling based on the theory of nonequilibrium superconductivity, including the vortex-assisted mechanism of initial dissipation.

Original language	English
Article number	064037
Journal	Physical Review Applied
Volume	9
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevApplied.9.064037
Publication status	Published - 2018

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abstract = "We demonstrate experimentally that single-photon detection can be achieved in micrometer-wide NbN bridges, with widths ranging from 0.53 to 5.15 μm and for photon wavelengths of 408 to 1550 nm. The microbridges are biased with a dc current close to the experimental critical current, which is estimated to be about 50% of the theoretically expected depairing current. These results offer an alternative to the standard superconducting single-photon detectors, based on nanometer-scale nanowires implemented in a long meandering structure. The results are consistent with improved theoretical modeling based on the theory of nonequilibrium superconductivity, including the vortex-assisted mechanism of initial dissipation.",

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AU - Korneeva, Yu P.

AU - Vodolazov, D. Yu

AU - Semenov, A. V.

AU - Florya, I. N.

AU - Simonov, N.

AU - Baeva, E.

AU - Korneev, A. A.

AU - Goltsman, G. N.

AU - Klapwijk, T. M.

PY - 2018

Y1 - 2018

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AB - We demonstrate experimentally that single-photon detection can be achieved in micrometer-wide NbN bridges, with widths ranging from 0.53 to 5.15 μm and for photon wavelengths of 408 to 1550 nm. The microbridges are biased with a dc current close to the experimental critical current, which is estimated to be about 50% of the theoretically expected depairing current. These results offer an alternative to the standard superconducting single-photon detectors, based on nanometer-scale nanowires implemented in a long meandering structure. The results are consistent with improved theoretical modeling based on the theory of nonequilibrium superconductivity, including the vortex-assisted mechanism of initial dissipation.

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Optical Single-Photon Detection in Micrometer-Scale NbN Bridges

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