Records |
Author |
Stevens, M.; Hadfield, R.; Schwall, R.; Nam, S.W.; Mirin, R.; Gupta, J. |
Title |
Fast lifetime measurements of infrared emitters using a low-jitter superconduct- ing single-photon detector |
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Journal Article |
Year |
2006 |
Publication |
Applied Physics Letters |
Abbreviated Journal |
Appl. Phys. Lett. |
Volume |
89 |
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Pages |
031109 |
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SSPD, jitter, QD, QW |
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RPLAB @ akorneev @ |
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611 |
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Author |
Stevens, M.; Hadfeld, R.; Schwall, R.; Nam, S.W.; and Mirin, R. |
Title |
Quantum dot single photon sources studied with superconducting single photon detectors |
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Journal Article |
Year |
2006 |
Publication |
IEEE J. Sel. Topics Quantum Electron. |
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Volume |
12 |
Issue |
6 |
Pages |
1255-1267 |
Keywords |
SSPD, jitter, QD, QW |
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RPLAB @ akorneev @ |
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612 |
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Kozorezov, A. G.; Lambert, C.; Marsili, F.; Stevens, M. J.; Verma, V. B.; Stern, J. A.; Horansky, R.; Dyer, S.; Duff, S.; Pappas, D. P.; Lita, A.; Shaw, M. D.; Mirin, R. P.; Sae Woo Nam |
Title |
Quasiparticle recombination in hotspots in superconducting current-carrying nanowires |
Type |
Journal Article |
Year |
2015 |
Publication |
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Abbreviated Journal |
Phys. Rev. B |
Volume |
92 |
Issue |
6 |
Pages |
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Keywords |
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Abstract |
We describe a kinetic model of recombination of non-equilibrium quasiparticles generated by single photon absorption in superconducting current-carrying nanowires. The model is developed to interpret two-photon detection experiments in which a single photon does not possess sufficient energy for breaking superconductivity at a fixed low bias current. We show that quasiparticle self- recombination in relaxing hotspot dominates diffusion expansion effects and explains the observed strong bias current, wavelength and temperature dependencies of hotspot relaxation in tungsten silicide superconducting nanowire single-photon detectors. |
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English |
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RPLAB @ alex_kazakov @ |
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1003 |
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Marsili, F.; Verma, V. B.; Stern, J. A.; Harrington, S.; Lita, A. E.; Gerrits, T.; Vayshenker, I.; Baek, B.; Shaw, M. D.; Mirin, R. P.; Nam, S. W. |
Title |
Detecting single infrared photons with 93% system efficiency |
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Journal Article |
Year |
2013 |
Publication |
Nat. Photon. |
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Volume |
7 |
Issue |
3 |
Pages |
210-214 |
Keywords |
SSPD quantum efficiency |
Abstract |
Single-photon detectors1 at near-infrared wavelengths with high system detection efficiency (>90%), low dark count rate (<1 c.p.s.), low timing jitter (<100 ps) and short reset time (<100 ns) would enable landmark experiments in a variety of fields2, 3, 4, 5, 6. Although some of the existing approaches to single-photon detection fulfil one or two of the above specifications1, to date, no detector has met all of the specifications simultaneously. Here, we report on a fibre-coupled single-photon detection system that uses superconducting nanowire single-photon detectors7 and closely approaches the ideal performance of single-photon detectors. Our detector system has a system detection efficiency (including optical coupling losses) greater than 90% in the wavelength range λ = 1,520–1,610 nm, with a device dark count rate (measured with the device shielded from any background radiation) of ~1 c.p.s., timing jitter of ~150 ps full-width at half-maximum (FWHM) and reset time of 40 ns. |
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1056 |
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