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Author | Gol’tsman, G.; Okunev, O.; Chulkova, G.; Lipatov, A.; Dzardanov, A.; Smirnov, K.; Semenov, A.; Voronov, B.; Williams, C.; Sobolewski, R. | ||||
Title | Fabrication and properties of an ultrafast NbN hot-electron single-photon detector | Type | Journal Article | ||
Year | 2001 | Publication | IEEE Trans. Appl. Supercond. | Abbreviated Journal | IEEE Trans. Appl. Supercond. |
Volume | 11 | Issue | 1 | Pages | 574-577 |
Keywords | NbN SSPD, SNSPD | ||||
Abstract | A new type of ultra-high-speed single-photon counter for visible and near-infrared wavebands based on an ultrathin NbN hot-electron photodetector (HEP) has been developed. The detector consists of a very narrow superconducting stripe, biased close to its critical current. An incoming photon absorbed by the stripe produces a resistive hotspot and causes an increase in the film’s supercurrent density above the critical value, leading to temporary formation of a resistive barrier across the device and an easily measurable voltage pulse. Our NbN HEP is an ultrafast (estimated response time is 30 ps; registered time, due to apparatus limitations, is 150 ps), frequency unselective device with very large intrinsic gain and negligible dark counts. We have observed sequences of output pulses, interpreted as single-photon events for very weak laser beams with wavelengths ranging from 0.5 /spl mu/m to 2.1 /spl mu/m and the signal-to-noise ratio of about 30 dB. | ||||
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ISSN | 1558-2515 | ISBN | Medium | ||
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Notes | Approved | no | |||
Call Number | Serial | 1547 | |||
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Author | Somani, S.; Kasapi, S.; Wilsher, K.; Lo, W.; Sobolewski, R.; Gol’tsman, G. | ||||
Title | New photon detector for device analysis: Superconducting single-photon detector based on a hot electron effect | Type | Journal Article | ||
Year | 2001 | Publication | J. Vac. Sci. Technol. B | Abbreviated Journal | J. Vac. Sci. Technol. B |
Volume | 19 | Issue | 6 | Pages | 2766-2769 |
Keywords | NbN SSPD, SNSPD | ||||
Abstract | A novel superconducting single-photon detector (SSPD), intrinsically capable of high quantum efficiency (up to 20%) over a wide spectral range (ultraviolet to infrared), with low dark counts (<1 cps), and fast (<40 ps) timing resolution, is described. This SSPD has been used to perform timing measurements on complementary metal–oxide–semiconductor integrated circuits (ICs) by detecting the infrared light emission from switching transistors. Measurements performed from the backside of a 0.13 μm geometry flip–chip IC are presented. Other potential applications for this detector are in telecommunications, quantum cryptography, biofluorescence, and chemical kinetics. | ||||
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ISSN | 0734211X | ISBN | Medium | ||
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Notes | Approved | no | |||
Call Number | Serial | 1542 | |||
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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 | Type | 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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Call Number | RPLAB @ gujma @ | Serial | 700 | ||
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Author | Семенов, А. В.; Девятов, И. А.; Рябчун, С. А.; Масленников, С. Н.; Масленникова, А. С.; Ларионов, П. А.; Воронов, Б. М.; Чулкова, Г. М. | ||||
Title | Поглощение терагерцового электромагнитного излучения в “грязной” сверхпроводниковой пленке при произвольном виде спектральных функций | Type | Journal Article | ||
Year | 2011 | Publication | Ж. Радиоэлектрон. | Abbreviated Journal | |
Volume | 10 | Issue | Pages | 7 | |
Keywords | terahertz electromagnetic radiation; superconductors; detectors of terahertz range | ||||
Abstract | A problem of absorption of high-frequency electromagnetic field in dirty superconductor is treated within Keldysh technic. Expression for the source term in the kinetic equation for quasiparticle distribution function is derived. The result is significant for deriving a consistent microscopic theory of superconducting detectors for terahertz frequency range, perspective detectors on kinetic inductance of current-biased superconducting strip and on Josephson inductance of tunnel. В технике Келдыша рассмотрена задача о поглощении мощности высокочастотного электромагнитного поля в сверхпроводнике, удовлетворяющем условию грязного предела. Получено выражение для члена источника в кинетическом уравнении для функции распределения квазичастиц, справедливое при произвольном виде спектральных функций. Этот результат имеет значение для развития последовательной микроскопической теории сверхпроводниковых детекторов излучения терагерцового диапазона, в частности, перспективных детекторов на кинетической индуктивности смещённой током сверхпроводниковой полоски и джозефсоновской индуктивности туннельного контакта. |
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Notes | Duplicated as 1117 | Approved | no | ||
Call Number | RPLAB @ gujma @ | Serial | 713 | ||
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Author | Semenov, A. V.; Devyatov, I. A.; Ryabchun, S. A.; Maslennikov, S. N.; Maslennikova, A. S.; Larionov, P. A.; Voronov, B. M.; Chulkova, G. M. | ||||
Title | Absorption of terahertz electromagnetic radiation in dirty superconducting film at arbitrary type of the spectral functions | Type | Journal Article | ||
Year | 2011 | Publication | Rus. J. Radio Electron. | Abbreviated Journal | Rus. J. Radio Electron. |
Volume | Issue | 10 | Pages | ||
Keywords | terahertz electromagnetic radiation; superconductors; detectors of terahertz range | ||||
Abstract | A problem of absorption of high-frequency electromagnetic field in dirty superconductor is treated within Keldysh technic. Expression for the source term in the kinetic equation for quasiparticle distribution function is derived. The result is significant for deriving a consistent microscopic theory of superconducting detectors for terahertz frequency range, perspective detectors on kinetic inductance of current-biased superconducting strip and on Josephson inductance of tunnel. | ||||
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Notes | 7 pages | Approved | no | ||
Call Number | Serial | 1117 | |||
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Author | Zhang, Wen; Li, Ning; Jiang, Ling; Miao, Wei; Lin, Zhen-Hui; Yao, Qi-Jun; Shi, Sheng-Cai; Chen, Jian; Wu, Pei-Heng; Svechnikov, S. I.; Vachtomin, Y. B.; Antipov, S. V.; Voronov, B. M.; Gol'tsman, G. N. | ||||
Title | Noise behaviour of a THz superconducting hot-electron bolometer mixer | Type | Journal Article | ||
Year | 2007 | Publication | Chinese Phys. Lett. | Abbreviated Journal | Chinese Phys. Lett. |
Volume | 24 | Issue | 6 | Pages | 1778-1781 |
Keywords | NbN HEB mixers | ||||
Abstract | A quasi-optical superconducting NbN hot-electron bolometer (HEB) mixer is measured in the frequency range of 0.5–2.5 THz for understanding of the frequency dependence of noise temperature of THz coherent detectors. It has been found that noise temperature increasing with frequency is mainly due to the coupling loss between the quasi-optical planar antenna and the superconducting HEB bridge when taking account of non-uniform distribution of high-frequency current. With the coupling loss corrected, the superconducting HEB mixer demonstrates a noise temperature nearly independent of frequency. | ||||
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ISSN | 0256-307X | ISBN | Medium | ||
Area | Expedition | Conference | |||
Notes | Approved | no | |||
Call Number | Serial | 1430 | |||
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Author | Chen, J.; Kang, L.; Jin, B. B.; Xu, W. W.; Wu, P. H.; Zhang, W.; Jiang, L.; Li, N.; Shi, S. C.; Gol'tsman, G. N. | ||||
Title | Properties of terahertz superconducting hot electron bolometer mixers | Type | Journal Article | ||
Year | 2008 | Publication | Int. J. Terahertz Sci. Technol. | Abbreviated Journal | Int. J. Terahertz Sci. Technol. |
Volume | 1 | Issue | 1 | Pages | 37-41 |
Keywords | NbN HEB mixers, noise temperature | ||||
Abstract | A quasi-optical superconducting niobium nitride (NbN) hot electron bolometer (HEB) mixer has been fabricated and measured in the terahertz (THz) frequency range of 0.5~2.52 THz. A receiver noise temperature of 2000 K at 2.52 THz has been obtained for the mixer without corrections. Also, the effect of a Parylene C anti-reflection (AR) coating on the silicon (Si) lens has been studied. | ||||
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Notes | Approved | no | |||
Call Number | Serial | 1417 | |||
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Author | Korneeva, Yu. P.; Trifonov, A. V.; Vakhtomin, Yu. B.; Smirnov, K. V. | ||||
Title | Design of resonator for superconducting single-photon detector | Type | Journal Article | ||
Year | 2011 | Publication | Rus. J. Radio Electron. | Abbreviated Journal | Rus. J. Radio Electron. |
Volume | Issue | 12 | Pages | ||
Keywords | SSPD optical resonator, SNSPD | ||||
Abstract | A resonator for superconducting single-photon detector is designed. Near 60% coupling with a radiation propagating from a dielectric substrate of optical fiber is demonstrated to be achieved for typical values of the detector’s film sheet resistance. | ||||
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Publisher | Place of Publication | Editor | |||
Language | Russian | Summary Language | Original Title | ||
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Notes | 6 pages | Approved | no | ||
Call Number | Serial | 1827 | |||
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Author | Gershenzon, E. M.; Gol'tsman, G. N.; Semenov, A. D. | ||||
Title | Submillimeter backward wave tube spectrometer for measuring superconducting film transmission | Type | Journal Article | ||
Year | 1983 | Publication | Pribory i Tekhnika Eksperimenta | Abbreviated Journal | Pribory i Tekhnika Eksperimenta |
Volume | 26 | Issue | 5 | Pages | 134-137 |
Keywords | BWO spectroscopy, spectrometer, transmission | ||||
Abstract | A spectrometer employing six backward wave tubes is described. It is intended for investigation of superconductors in the 0.2-3 mm range of wave lengths. During the measurement of the transmission spectrum it is possible to determine the energy gap for superconduct1ng films 50 to 4000 A thick. The transmission factor can vary from 10-1 to 10-9. Spectrum of relation of film transmission factors in superconducting and normal states is measured for determining the energy gap 2 Δ. The transmission spectrum obtained by means of a computer for vanadium film 300 A thick is given as an example. The energy gap 2 Δ = 1.4 MeV | ||||
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Language | Russian | Summary Language | Original Title | ||
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Series Volume | Series Issue | Edition | |||
ISSN | 0032-8162 | ISBN | Medium | ||
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Notes | Субмиллиметровый спектрометр с лампами обратной волны для измерения пропускания сверхпроводниковых пленок | Approved | no | ||
Call Number | Serial | 1713 | |||
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Author | Karasik, B. S.; Zorin, M. A.; Milostnaya, I. I.; Elantev, A. I.; Gol’tsman, G. N.; Gershenzon, E. M. | ||||
Title | Subnanosecond switching of YBaCuO films between superconducting and normal states induced by current pulse | Type | Journal Article | ||
Year | 1995 | Publication | J. Appl. Phys. | Abbreviated Journal | J. Appl. Phys. |
Volume | 77 | Issue | 8 | Pages | 4064-4070 |
Keywords | YBCO HTS switches | ||||
Abstract | A study is reported of the current switching in high‐quality YBaCuO films deposited onto NdGaO3 and ZrO2 substrates between superconducting (S) and normal (N) states. The films 60–120 nm thick prepared by laser ablation were structured into single strips between gold contacts. The time dependence of the resistance after application of the voltage step to the film was monitored. Experiment performed within certain ranges of voltage amplitudes and temperatures has shown the occurrence of the fast stage (shorter than 400 ps) both in S‐N and N‐S transitions. A fraction of the film resistance changing within this stage in the S‐N transition increases with the current amplitude. A subnanosecond N‐S stage becomes more pronounced for shorter pulses. The fast switching is followed by the much slower change of resistance. The mechanism of switching is discussed in terms of the hot‐electron phenomena in YBaCuO. The contributions of other thermal processes (e.g., a phonon escape from the film, a heat diffusion in the film and substrate, a resistive domain formation) in the subsequent stage of the resistance dynamic have been also discussed. The basic limiting characteristics (average dissipated power, energy needed for switching, maximum repetition rate) of a picosecond switch which is proposed to be developed are estimated. | ||||
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Series Volume | Series Issue | Edition | |||
ISSN | 0021-8979 | ISBN | Medium | ||
Area | Expedition | Conference | |||
Notes | Approved | no | |||
Call Number | Serial | 1623 | |||
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Author | Gershenzon, E. M.; Gershenzon, M. E.; Goltsman, G. N.; Lulkin, A.; Semenov, A. D.; Sergeev, A. V. | ||||
Title | Electron-phonon interaction in ultrathin Nb films | Type | Journal Article | ||
Year | 1990 | Publication | Sov. Phys. JETP | Abbreviated Journal | Sov. Phys. JETP |
Volume | 70 | Issue | 3 | Pages | 505-511 |
Keywords | Nb films | ||||
Abstract | A study was made of the heating of electrons in normal resistive states of superconducting thin Nb films. The directly determined relaxation time of the resistance of a sample and the rise of the electron temperature were used to find the electron-phonon interaction time rep,, The dependence of rep, on the mean free path of electrons re,, a 1-'demonstrated, in agreement with the theoretical predictions, that the contribution of the inelastic scattering of electrons by impurities to the energy relaxation process decreased at low temperatures and the observed temperature dependence rep, a T 2 was due to a modification of the phonon spectrum in thin fllms. 1. Much new information on the electron-phonon interaction time?;,, in thin films of normal metals and superconductors has been published recently. This information has been obtained mainly as a result of two types of measurement. One includes experiments on weak electron localization investigated by the method of quantum interference corrections to the conductivity of disordered conductors, which can be used to find the relaxation time T, of the phase of the electron wave function. In the absence of the scattering of electrons by paramagnetic impurities the relaxation time T, is associated with the most effective process of energy relaxation: T;= TL+ rep;, where T,, is the electronelectron relaxation time. At low temperatures, when the dependence T; a T is exhibited by thin disordered films, the dominant channel is that of the electron-electron relaxation and there is a lower limit to the temperature range in which rep, can be investigated. |
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Notes | Approved | no | |||
Call Number | Serial | 241 | |||
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Author | Voronov, B. M.; Gershenzon, E. M.; Gol'tsman, G. N.; Gubkina, T. O.; Semash, V. D. | ||||
Title | Superconductive properties of ultrathin NbN films on different substrates | Type | Journal Article | ||
Year | 1994 | Publication | Sverkhprovodimost': Fizika, Khimiya, Tekhnika | Abbreviated Journal | Sverkhprovodimost': Fizika, Khimiya, Tekhnika |
Volume | 7 | Issue | 6 | Pages | 1097-1102 |
Keywords | NbN films | ||||
Abstract | A study was made on dependence of surface resistance, critical temperature and width of superconducting transition on application temperature and thickness of NbN films, which varied within the range of 3-10 nm. Plates of sapphire, fused and monocrystalline quartz, MgO, as well as Si and silicon oxide were used as substrates. NbN films with 160 μθ·cm specific resistance and 16.5 K (Tc) critical temperature were obtained on sapphire substrates. Intensive growth of ΔTc was noted for films, applied on fused quartz, with increase of precipitation temperature. This is explained by occurrence of high tensile stresses in NbN films, caused by sufficient difference of thermal coefficients of expansion of NbN and quartz. | ||||
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Language | Russian | Summary Language | Original Title | ||
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ISSN | 0131-5366 | ISBN | Medium | ||
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Notes | Сверхпроводниковые свойства ультратонких пленок NbN на различных подложках | Approved | no | ||
Call Number | Serial | 1631 | |||
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Author | Gershenzon, E. M.; Gol'tsman, G. N.; Dzardanov, A. L.; Elant'ev, A. I.; Zorin, M. A.; Markin, A. G.; Semenov, A. D. | ||||
Title | S-N switching of niobium and YBCO films: limit time and perspective of fast key element creation | Type | Journal Article | ||
Year | 1992 | Publication | Sverkhprovodimost': Fizika, Khimiya, Tekhnika | Abbreviated Journal | Sverkhprovodimost': Fizika, Khimiya, Tekhnika |
Volume | 5 | Issue | 12 | Pages | 2386-2402 |
Keywords | YBCO HTS switches | ||||
Abstract | A study was made on processes of switching of thin niobium film strips between superconducting and normal states under the effect of optical radiation pulse and voltage step. The results are described satisfactorily by the model of spatial homogeneous electron heating. It is shown that limiting switching times can be equal to several shares of nanosecond at 4.2 K. Preliminary results for YBa2Cu3O-7-x films are presented. Prospects and advantages of creation of ducting structures of narrow streps, are discussed. | ||||
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ISSN | 0131-5366 | ISBN | Medium | ||
Area | Expedition | Conference | |||
Notes | Approved | no | |||
Call Number | Serial | 1674 | |||
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Author | Tong, C. E.; Blundell, R.; Papa, D. C.; Smith, M.; Kawamura, J.; Gol'tsman, G.; Gershenzon, E.; Voronov, B. | ||||
Title | An all solid-state superconducting heterodyne receiver at terahertz frequencies | Type | Journal Article | ||
Year | 1999 | Publication | IEEE Microw. Guid. Wave Lett. | Abbreviated Journal | IEEE Microw. Guid. Wave Lett. |
Volume | 9 | Issue | 9 | Pages | 366-368 |
Keywords | waveguide NbN HEB mixers | ||||
Abstract | A superconducting hot-electron bolometer mixer-receiver operating from 1 to 1.26 THz has been developed. This heterodyne receiver employs two solid-state local oscillators each consisting of a Gunn oscillator followed by two stages of varactor frequency multiplication. The measured receiver noise temperature is 1350 K at 1.035 THz and 2700 K at 1.26 THz. This receiver demonstrates that tunable solid-state local oscillators, supplying only a few micro-watts of output power, can be used in terahertz receiver applications. | ||||
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Series Volume | Series Issue | Edition | |||
ISSN | 1051-8207 | ISBN | Medium | ||
Area | Expedition | Conference | |||
Notes | Approved | no | |||
Call Number | Serial | 1565 | |||
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Author | Gershenzon, E. M.; Gol’tsman, G. N.; Gousev, Y. P.; Elant’ev, A. I.; Semenov, A. D. | ||||
Title | Electromagnetic radiation mixer based on electron heating in resistive state of superconductive Nb and YBaCuO films | Type | Journal Article | ||
Year | 1991 | Publication | IEEE Trans. Magn. | Abbreviated Journal | IEEE Trans. Magn. |
Volume | 27 | Issue | 2 | Pages | 1317-1320 |
Keywords | YBCO, HTS, Nb HEB mixers | ||||
Abstract | A theory of an electron-heating mixer which makes it possible to calculate all the characteristics of the device is developed. It is shown that positive conversion gain is possible for such a mixer in the millimeter to near-infrared wavelength range. The dynamic range and the optimum heterodyne power can be selected from a very wide interval by varying the mixing element volume. Measurements made for Nb within the frequency range of 120-750 GHz confirm the theory. The conversion loss obtained at T=1.6 K and normalized to the element reaches 0.3 dB in the intermediate frequency band of 40 MHz; the possible noise temperature is 50 K. The estimation of noise temperature and output band for YBaCuO at T=77 yields 200 K and more than 10 GHz, respectively. | ||||
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Series Volume | Series Issue | Edition | |||
ISSN | 1941-0069 | ISBN | Medium | ||
Area | Expedition | Conference | |||
Notes | Approved | no | |||
Call Number | Serial | 1681 | |||
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