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Tretyakov, I. V.; Ryabchun, S. A.; Maslennikov, S. N.; Finkel, M. I.; Kaurova, N. S.; Seleznev, V. A.; Voronov, B. M.; Gol'tsman, G.N. |
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Title |
NbN HEB mixer: fabrication, noise temperature reduction and characterization |
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2008 |
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Proc. Basic problems of superconductivity |
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HEB, mixer, noise temperature, conversion gain bandwidth |
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We demonstrate that in the terahertz region superconducting hot-electron mixers offer the lowest noise temperature, opening the possibility of using HTS's in the future to fabricate these devices. Specifically, a noise temperature of 950 K was measured for the receiver operating at 2.5 THz with a NbN HEB mixer, and a gain bandwidth of 6 GHz was measured at 300 GHz near Tc for the same mixer. |
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Moscow-Zvenigorod |
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591 |
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Schuck, C.; Pernice, W. H. P.; Minaeva, O.; Li, Mo; Gol'tsman, G.; Sergienko, A. V.; Tang, H. X. |
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Title |
Matrix of integrated superconducting single-photon detectors with high timing resolution |
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Journal Article |
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2013 |
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IEEE Trans. Appl. Supercond. |
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IEEE Trans. Appl. Supercond. |
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23 |
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3 |
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2201007-2201007 |
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NbN SSPD, SNSPD, array, matrix |
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We demonstrate a large grid of individually addressable superconducting single photon detectors on a single chip. Each detector element is fully integrated into an independent waveguide circuit with custom functionality at telecom wavelengths. High device density is achieved by fabricating the nanowire detectors in traveling wave geometry directly on top of silicon-on-insulator waveguides. Our superconducting single photon detector matrix includes detector designs optimized for high detection efficiency, low dark count rate, and high timing accuracy. As an example, we exploit the high timing resolution of a particularly short nanowire design to resolve individual photon round-trips in a cavity ring-down measurement of a silicon ring resonator. |
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1051-8223 |
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1373 |
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Mohan, N.; Minaeva, O.; Gol'tsman, G. N.; Nasr, M. B.; Saleh, B. E.; Sergienko, A. V.; Teich, M. C. |
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Photon-counting optical coherence-domain reflectometry using superconducting single-photon detectors |
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Journal Article |
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2008 |
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Opt. Express |
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Opt. Express |
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16 |
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22 |
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18118-18130 |
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SSPD, SNSPD |
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We consider the use of single-photon counting detectors in coherence-domain imaging. Detectors operated in this mode exhibit reduced noise, which leads to increased sensitivity for weak light sources and weakly reflecting samples. In particular, we experimentally demonstrate the possibility of using superconducting single-photon detectors (SSPDs) for optical coherence-domain reflectometry (OCDR). These detectors are sensitive over the full spectral range that is useful for carrying out such imaging in biological samples. With counting rates as high as 100 MHz, SSPDs also offer a high rate of data acquisition if the light flux is sufficient. |
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Department of Biomedical Engineering, Boston University, Boston, MA 02215, USA. nm82@bu.edu |
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1094-4087 |
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PMID:18958090 |
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1407 |
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Finkel, M. I.; Maslennikov, S. N.; Gol'tsman, G. N. |
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The concept of the receiving complex for the “Millimetron” space radio telescope |
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2007 |
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Radiophys. Quant. Electron. |
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Radiophys. Quant. Electron. |
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50 |
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10-11 |
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837-846 |
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HEB, applications, Millimetron, VLBI |
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We consider the current status of research in the development of a submillimeter and far-infrared receiving instrument and propose promising solutions for the receivers of the spaceborne telescope “Millimetron,” which allow one to realize comprehensively the opportunities given by this international project administrated by the Astrospace Center of the P. N. Lebedev Physical Institute of the Russian Academy of Sciences. |
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0033-8443 |
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411 |
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Finkel, M. I.; Maslennikov, S. N.; Gol'tsman, G. N. |
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Terahertz heterodyne receivers based on superconductive hot-electron bolometer mixers |
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2005 |
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Radiophys. Quant. Electron. |
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Radiophys. Quant. Electron. |
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48 |
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10-11 |
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859-864 |
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HEB, applications |
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We consider recent results in development of hot-electron bolometer mixers. Special attention is paid to optimization of the contacts between the antenna and the active area of a superconducting film. An important result in the study of the parasitic effect of direct detection is obtained during the measurement of the noise temperatures by the hot/cold load method. The latest results of studies of the waveguide hot-electron bolometer mixers and their successful practical applications are considered. Progress in development of high-frequency (over 1.3 THz) heterodyne receivers for several important international projects is discussed and new submillimeter radio astronomy projects ESPRIT and SAFIR are described. |
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0033-8443 |
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381 |
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