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Author |
Blagosklonskaya, L. E.; Gershenzon, E. M.; Goltsman, G. N.; Elantev, A. I. |
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Title |
Effect of strong magnetic-field on spectrum of hydrogen-like admixtures in semiconductors |
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Conference Article |
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Year |
1978 |
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Izv. Akad. Nauk SSSR, Seriya Fizicheskaya |
Abbreviated Journal |
Izv. Akad. Nauk SSSR, Seriya Fizicheskaya |
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42 |
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6 |
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1231-1234 |
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spectrum, semiconductors, admixtures, strong magnetic-field |
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Mezhdunarodnaya Kniga 39 Dimitrova Ul., 113095 Moscow, Russia |
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blagosklonskaya1978effect |
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1724 |
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Author |
Elezov, M. S.; Semenov, A. V.; An, P. P.; Tarkhov, M. A.; Goltsman, G. N.; Kardakova, A. I.; Kazakov, A. Y. |
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Title |
Investigating the detection regimes of a superconducting single-photon detector |
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Journal Article |
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Year |
2013 |
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J. Opt. Technol. |
Abbreviated Journal |
J. Opt. Technol. |
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80 |
Issue |
7 |
Pages |
435 |
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Keywords |
SSPD, quantum efficiency |
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The detection regimes of a superconducting single-photon detector have been investigated. A technique is proposed for determining the regions in which “pure regimes” predominate. Based on experimental data, the dependences of the internal quantum efficiency on the bias current are determined in the one-, two-, and three-photon detection regimes. |
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1070-9762 |
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1172 |
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Antipov, S.; Trifonov, A.; Krause, S.; Meledin, D.; Kaurova, N.; Rudzinski, M.; Desmaris, V.; Belitsky, V.; Goltsman, G. |
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Title |
Improved bandwidth of a 2 THz hot-electron bolometer heterodyne mixer fabricated on sapphire with a GaN buffer layer |
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Journal Article |
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2019 |
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Supercond. Sci. Technol. |
Abbreviated Journal |
Supercond. Sci. Technol. |
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32 |
Issue |
7 |
Pages |
075003 |
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NbN HEB mixer, GaN buffer layer, sapphire substrate |
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We report on the signal-to-noise and gain bandwidth of a niobium nitride (NbN) hot-electron bolometer (HEB) mixer at 2 THz fabricated on a sapphire substrate with a GaN buffer layer. Two mixers with different DC properties and geometrical dimensions were studied and they demonstrated very close bandwidth performance. The signal-to-noise bandwidth is increased to 8 GHz in comparison to the previous results, obtained without a buffer-layer. The data were taken in a quasi-optical system with the use of the signal-to-noise method, which is close to the signal levels used in actual astrophysical observations. We find an increase of the gain bandwidth to 5 GHz. The results indicate that prior results obtained on a substrate of crystalline GaN can also be obtained on a conventional sapphire substrate with a few micron MOCVD-deposited GaN buffer-layer. |
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IOP Publishing |
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Antipov_2019 |
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1277 |
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Korneev, A.; Korneeva, Y.; Florya, I.; Semenov, A.; Goltsman, G. |
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Title |
Photon switching statistics in multistrip superconducting single-photon detectors |
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Journal Article |
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2018 |
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IEEE Trans. Appl. Supercond. |
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IEEE Trans. Appl. Supercond. |
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Volume |
28 |
Issue |
7 |
Pages |
1-4 |
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Keywords |
SSPD, SNSPD |
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We study photon count statistics in superconducting single-photon detectors consisting of up to 70 narrow superconducting strips connected in parallel. Using interarrival time analysis, we demonstrate that our samples are operated in the “arm-trigger” regime and require up to seven subsequently absorbed photons to form a resistive state in the whole sample. We also performed numerical simulation of the light and dark count rates versus detector bias current, which are in good agreement with the experimental results. |
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1051-8223 |
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1304 |
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Seliverstov, S. V.; Anfertyev, V. A.; Tretyakov, I. V.; Ozheredov, I. A.; Solyankin, P. M.; Revin, L. S.; Vaks, V. L.; Rusova, A. A.; Goltsman, G. N.; Shkurinov, A. P. |
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Title |
Terahertz heterodyne receiver with an electron-heating mixer and a heterodyne based on the quantum-cascade laser |
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Journal Article |
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2017 |
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Radiophys. Quant. Electron. |
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Radiophys. Quant. Electron. |
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60 |
Issue |
7 |
Pages |
518-524 |
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Keywords |
NbN HEB mixer, QCL |
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We study characteristics of the laboratory prototype of a terahertz heterodyne receiver with an electron-heating mixer and a heterodyne based on the quantum-cascade laser. The results obtained demonstrate the possibility to use this receiver as a basis for creation of a high-sensitivity terahertz spectrometer, which can be used in many basic and practical applications. A significant advantage of this receiver will be the possibility of placing the mixer and heterodyne in the same cryostat, which will reduce the device dimensions considerably. The obtained experimental results are analyzed, and methods of optimizing the parameters of the receiver are proposed. |
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0033-8443 |
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1322 |
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