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Bennett, Douglas A.; Schmidt, Daniel R.; Swetz, Daniel S.; Ullom, Joel N. |
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Phase-slip lines as a resistance mechanism in transition-edge sensors |
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2014 |
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Appl. Phys. Lett. |
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Appl. Phys. Lett. |
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104 |
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042602 |
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microbolometers, TES, phase-slip lines, PSL |
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The fundamental mechanism of resistance in voltage-biased superconducting films is poorly understood despite its importance as the basis of transition-edge sensors (TESs). TESs are utilized in state-of-the-art microbolometers and microcalorimeters covering a wide range of energies and applications. We present a model for the resistance of a TES based on phase-slip lines (PSLs) and compare the model to data. One of the model's predictions, discrete changes in the number of PSLs, is a possible explanation for the observed switching between discrete current states in localized regions of bias. |
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Recommended by Klapwijk |
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929 |
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Tretyakov, Ivan; Ryabchun, Sergey; Finkel, Matvey; Maslennikova, Anna; Kaurova, Natalia; Lobastova, Anastasia; Voronov, Boris; Gol'tsman, Gregory |
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Title |
Low noise and wide bandwidth of NbN hot-electron bolometer mixers |
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Journal Article |
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2011 |
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Appl. Phys. Lett. |
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Appl. Phys. Lett. |
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98 |
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033507 (1 to 3) |
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NbN HEB mixer |
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We report a record double sideband noise temperature of 600 K (5hν/kB) offered by a NbN hot-electron bolometer receiver at 2.5 THz. Allowing for standing wave effects, this value was found to be constant in the intermediate frequency range 1–7 GHz, which indicates that the mixer has an unprecedentedly large noise bandwidth in excess of 7 GHz. The insight into this is provided by gain bandwidth measurements performed at the superconducting transition. They show that the dependence of the bandwidth on the mixer length follows the model for an HEB mixer with diffusion and phonon cooling of the hot electrons. |
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RPLAB @ gujma @ |
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638 |
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Fu, K.; Zannoni, R.; Chan, C.; Adams, S. H.; Nicholson, J.; Polizzi, E.; Yngvesson, K. S. |
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Terahertz detection in single wall carbon nanotubes |
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Journal Article |
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2008 |
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Applied Physics Letters |
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Appl. Phys. Lett. |
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Volume |
92 |
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3 |
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033105 |
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HEB, single wall, carbon nanotube, CNT, SWNT, SWCNT, terahertz detection, THz |
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It is reported that terahertz radiation from 0.69 to 2.54 THz has been sensitively detected in a device consisting of bundles of carbon nanotubes containing single wall metallic carbon nanotubes, quasioptically coupled through a lithographically fabricated antenna, and a silicon lens. The measured data are consistent with a bolometric detection process in the metallic tubes and the devices show promise for operation well above 4.2 K. |
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0003-6951 |
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NEP is not shown |
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566 |
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Stevens, M.; Hadfield, R.; Schwall, R.; Nam, S.W.; Mirin, R.; Gupta, J. |
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Fast lifetime measurements of infrared emitters using a low-jitter superconduct- ing single-photon detector |
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2006 |
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Applied Physics Letters |
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Appl. Phys. Lett. |
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89 |
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031109 |
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SSPD, jitter, QD, QW |
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RPLAB @ akorneev @ |
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611 |
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Zinoni, C.; Alloing, B.; Li, L. H.; Marsili, F.; Fiore, A.; Lunghi, L.; Gerardino, A.; Vakhtomin, Y. B.; Smirnov, K. V.; Gol’tsman, G. N. |
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Single-photon experiments at telecommunication wavelengths using nanowire superconducting detectors |
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2007 |
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Appl. Phys. Lett. |
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Appl. Phys. Lett. |
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91 |
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3 |
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031106 (1 to 3) |
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SSPD, SNSPD, APD |
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The authors report fiber-coupled superconducting single-photon detectors with specifications that exceed those of avalanche photodiodes, operating at telecommunication wavelength, in sensitivity, temporal resolution, and repetition frequency. The improved performance is demonstrated by measuring the intensity correlation function g(2)(τ) of single-photon states at 1300nm produced by single semiconductor quantum dots.
This work was supported by Swiss National Foundation through the “Professeur borsier” and NCCR Quantum Photonics program, FP6 STREP “SINPHONIA” (Contract No. NMP4-CT-2005-16433), IP “QAP” (Contract No. 15848), NOE “ePIXnet,” and the Italian MIUR-FIRB program. |
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0003-6951 |
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Erratum: 1395 |
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1396 |
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