Waveguide-integrated single- and multi-photon detection at telecom wavelengths using superconducting nanowires

We investigate single- and multi-photon detection regimes of superconducting nanowire detectors embedded in silicon nitride nanophotonic circuits. At near-infrared wavelengths, simultaneous detection of up to three photons is observed for 120 nm wide nanowires biased far from the critical current, w...

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Published in:Applied physics letters 2015-04, Vol.106 (15)
Main Authors: Ferrari, Simone, Kahl, Oliver, Kovalyuk, Vadim, Goltsman, Gregory N., Korneev, Alexander, Pernice, Wolfram H. P.
Format: Article
Language:English
Subjects:
Applied physics
CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
CRITICAL CURRENT
Critical current (superconductivity)
DETECTION
ELECTRIC CURRENTS
MULTI-PHOTON PROCESSES
NANOWIRES
NEAR INFRARED RADIATION
PHOTONS
QUANTUM EFFICIENCY
Quantum theory
Silicon nitride
SILICON NITRIDES
SUPERCONDUCTING WIRES
Superconductivity
WAVEGUIDES
WAVELENGTHS
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cited_by cdi_FETCH-LOGICAL-c285t-45aa467553d97ff951fe644fc7bed7c319a610191adb2c4fc491a452755223b13
cites cdi_FETCH-LOGICAL-c285t-45aa467553d97ff951fe644fc7bed7c319a610191adb2c4fc491a452755223b13
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container_issue 15
container_start_page
container_title Applied physics letters
container_volume 106
creator Ferrari, Simone
Kahl, Oliver
Kovalyuk, Vadim
Goltsman, Gregory N.
Korneev, Alexander
Pernice, Wolfram H. P.
description We investigate single- and multi-photon detection regimes of superconducting nanowire detectors embedded in silicon nitride nanophotonic circuits. At near-infrared wavelengths, simultaneous detection of up to three photons is observed for 120 nm wide nanowires biased far from the critical current, while narrow nanowires below 100 nm provide efficient single photon detection. A theoretical model is proposed to determine the different detection regimes and to calculate the corresponding internal quantum efficiency. The predicted saturation of the internal quantum efficiency in the single photon regime agrees well with plateau behavior observed at high bias currents.
doi_str_mv 10.1063/1.4917166
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1077-3118
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source American Institute of Physics:Jisc Collections:Transitional Journals Agreement 2021-23 (Reading list); American Institute of Physics
subjects Applied physics
CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
CRITICAL CURRENT
Critical current (superconductivity)
DETECTION
ELECTRIC CURRENTS
MULTI-PHOTON PROCESSES
NANOWIRES
NEAR INFRARED RADIATION
PHOTONS
QUANTUM EFFICIENCY
Quantum theory
Silicon nitride
SILICON NITRIDES
SUPERCONDUCTING WIRES
Superconductivity
WAVEGUIDES
WAVELENGTHS
title Waveguide-integrated single- and multi-photon detection at telecom wavelengths using superconducting nanowires
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