| Records |
| Author |
Dauler, Eric; Kerman, Andrew; Robinson, Bryan; Yang, Joel; Voronov, Boris; Goltsman, Gregory; Hamilton, Scott; Berggren, Karl |
| Title |
Photon-number-resolution with sub-30-ps timing using multi-element superconducting nanowire single photon detectors |
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Journal Article |
| Year |
2009 |
Publication |
J. Modern Opt. |
Abbreviated Journal |
J. Modern Opt. |
| Volume |
56 |
Issue  |
2 |
Pages |
364-373 |
| Keywords |
PNR SSPD; SNSPD; photon-number-resolution; superconducting nanowire single photon detector; timing jitter; system detection efficiency |
| Abstract |
A photon-number-resolving detector based on a four-element superconducting nanowire single photon detector is demonstrated to have sub-30-ps resolution in measuring the arrival time of individual photons. This detector can be used to characterize the photon statistics of non-pulsed light sources and to mitigate dead-time effects in high-speed photon counting applications. Furthermore, a 25% system detection efficiency at 1550 nm was demonstrated, making the detector useful for both low-flux source characterization and high-speed photon-counting and quantum communication applications. The design, fabrication and testing of this detector are described, and a comparison between the measured and theoretical performance is presented. |
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700 |
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Pothier, H.; Guéron, S.; Birge, Norman O.; Esteve, D.; Devoret, M. H. |
| Title |
Energy distribution function of quasiparticles in mesoscopic wires |
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Journal Article |
| Year |
1997 |
Publication |
Phys. Rev. Lett. |
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| Volume |
79 |
Issue |
18 |
Pages |
3490-3493 |
| Keywords |
tunnel probe, metallic nanowire, diffusive wire, diffusive nanowire |
| Abstract |
We have measured with a tunnel probe the energy distribution function of Landau quasiparticles in metallic diffusive wires connected to two reservoir electrodes, with an applied bias voltage. The distribution function in the middle of a 1.5-μm-long wire resembles the half sum of the Fermi distributions of the reservoirs. The distribution functions in 5-μm-long wires are more rounded, due to interactions between quasiparticles during the longer diffusion time across the wire. From the scaling of the data with the bias voltage, we find that the scattering rate between two quasiparticles varies as <c9><203a>–2, where <c9><203a> is the energy transferred. |
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921 |
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Anthore, A.; Pothier, H.; Esteve, D. |
| Title |
Density of states in a superconductor carrying a supercurrent |
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Journal Article |
| Year |
2003 |
Publication |
Phys. Rev. Lett. |
Abbreviated Journal |
Phys. Rev. Lett. |
| Volume |
90 |
Issue |
12 |
Pages |
127001 (1 to 4) |
| Keywords |
Usadel, superconducting nanowire |
| Abstract |
We have measured the tunneling density of states (DOS) in a superconductor carrying a supercurrent or exposed to an external magnetic field. The pair correlations are weakened by the supercurrent, leading to a modification of the DOS and to a reduction of the gap. As predicted by the theory of superconductivity in diffusive metals, we find that this effect is similar to that of an external magnetic field. |
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Recommended by Klapwijk |
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924 |
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Zhizhon, Yan; Majedi, Hamed A. |
| Title |
Optoelectronic mixing in the NbN superconducting nanowire single photon detectors |
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Conference Article |
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2009 |
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Proc. SPIE |
Abbreviated Journal |
Proc. SPIE |
| Volume |
3786 |
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9 |
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Optoelectronic devices, microwave superconductivity, nonlinearity, single photon detector, superconductivity, nanowire, optical mixing, microwave mixers, amplitude modulation, intensity modulation. |
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In this paper, we present our experimental results on the electrically pumped optoelectronic mixing effect exhibited in a niobium nitride (NbN) superconducting nanowire. The experimental setup in order to test the mixer has been reported in detail. This superconductive nanowire optoelectronic mixer demonstrates photodetection and mixing in an integrated manner. We have explored both effects under a great variety of external conditions, such as temperature and bias current, in order to seek potential ways toward quantum optoelectronic detection and mixing by such nanowire device. |
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RPLAB @ gujma @ |
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651 |
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Семенов, А. В.; Девятов, И. А.; Третьяков, И. В.; Лобанов, Ю. В.; Ожегов, Р. В.; Петренко, Д. В.; Селиверстов, С. В.; Финкель, М. И. |
| Title |
Вывод уравнения типа уравнения гинзбурга-ландау для нанопроволоки вблизи критического магнитного поля |
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Journal Article |
| Year |
2011 |
Publication |
Журнал радиоэлектроники |
Abbreviated Journal |
Ж. радиоэлектроники |
| Volume |
11 |
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4 |
| Keywords |
superconductivity; nanowire; Ginzburg-Landau equation |
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Nonlinear Ginzburg-Landau equation for dirty supercondicting 1D wire is derived in the limit of high magnetic field.
В пределе больших магнитных полей выведено нелинейное уравнение Гинзбурга-Ландау, описывающее состояние одномерной «грязной» нанопроволоки. |
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RPLAB @ gujma @ |
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714 |
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