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Author (down) Svechnikov, S. I.; Finkel, M. I.; Maslennikov, S. N.; Vachtomin, Y. B.; Smirnov, K. V.; Seleznev, V. A.; Korotetskaya, Y. P.; Kaurova, N. S.; Voronov, B. M.; Gol’tsman, G. N.
Title Superconducting hot electron bolometer mixer for middle IR range Type Conference Article
Year 2006 Publication Proc. 16th Int. Crimean Microwave and Telecommunication Technology Abbreviated Journal Proc. 16th Int. Crimean Microwave and Telecommunication Technology
Volume 2 Issue Pages 686-687
Keywords IR NbN HEB mixer, detector, GaAs substrate
Abstract The developed directly lens coupled hot electron bolometer (HEB) mixer was based on 5 nm superconducting NbN deposited on GaAs substrate. The layout of the structure, including 30x20 mcm^2 active area coupled with a 50 Ohm coplanar line, was patterned by photolithography. The responsivity of the mixer was measured in a direct detection mode in the 25-64 THz frequency range. The noise performance of the mixer and the directivity of the receiver were investigated in a heterodyne mode. A 10.6 mum wavelength CW CO2 laser was utilized as a local oscillator.
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Notes Approved no
Call Number 4023440 Serial 1297
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Author (down) Svechnikov, S. I.; Antipov, S. V.; Vakhtomin, Y. B.; Goltsman, G. N.; Gershenzon, E. M.; Cherednichenko, S. I.; Kroug, M.; Kollberg, E.
Title Conversion and noise bandwidths of terahertz NbN hot-electron bolometer mixers Type Journal Article
Year 2001 Publication Physics of Vibrations Abbreviated Journal Physics of Vibrations
Volume 9 Issue 3 Pages 205-210
Keywords NbN HEB mixers
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Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 1069-1227 ISBN Medium
Area Expedition Conference
Notes Approved no
Call Number Serial 1551
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Author (down) 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
Area Expedition Conference
Notes Approved no
Call Number Serial 1542
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Author (down) Sobolewski, Roman; Xu, Ying; Zheng, Xuemei; Williams, Carlo; Zhang, Jin; Verevkin, Aleksandr; Chulkova, Galina; Korneev, Alexander; Lipatov, Andrey; Okunev, Oleg; Smirnov, Konstantin; Gol'tsman, Gregory N.
Title Spectral sensitivity of the NbN single-photon superconducting detector Type Journal Article
Year 2002 Publication IEICE Trans. Electron. Abbreviated Journal IEICE Trans. Electron.
Volume E85-C Issue 3 Pages 797-802
Keywords NbN SSPD, SNSPD
Abstract We report our studies on the spectral sensitivity of superconducting NbN thin-film single-photon detectors (SPD's) capable of GHz counting rates of visible and near-infrared photons. In particular, it has been shown that a NbN SPD is sensitive to 1.55-µm wavelength radiation and can be used for quantum communication. Our SPD's exhibit experimentally measured intrinsic quantum efficiencies from 20% at 800 nm up to 1% at 1.55-µm wavelength. The devices demonstrate picosecond response time (<100 ps, limited by our readout system) and negligibly low dark counts. Spectral dependencies of photon counting of continuous-wave, 0.4-µm to 3.5-µm radiation, and 0.63-µm, 1.33-µm, and 1.55-µm laser-pulsed radiations are presented for the single-stripe-type and meander-type devices.
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Notes Approved no
Call Number Serial 1531
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Author (down) Sobolewski, R.; Zhang, J.; Slysz, W.; Pearlman, A.; Verevkin, A.; Lipatov, A.; Okunev, O.; Chulkova, G.; Korneev, A.; Smirnov, K.; Kouminov, P.; Voronov, B.; Kaurova, N.; Drakinsky, V.; Goltsman, G. N.
Title Ultrafast superconducting single-photon optical detectors Type Conference Article
Year 2003 Publication Proc. SPIE Abbreviated Journal Proc. SPIE
Volume 5123 Issue Pages 1-11
Keywords NbN SSPD, SNSPD
Abstract We present a new class of single-photon devices for counting of both visible and infrared photons. Our superconducting single-photon detectors (SSPDs) are characterized by the intrinsic quantum efficiency (QE) reaching up to 100%, above 10 GHz counting rate, and negligible dark counts. The detection mechanism is based on the photon-induced hotspot formation and subsequent appearance of a transient resistive barrier across an ultrathin and submicron-wide superconducting stripe. The devices are fabricated from 3.5-nm-thick NbN films and operate at 4.2 K, well below the NbN superconducting transition temperature. Various continuous and pulsed laser sources in the wavelength range from 0.4 μm up to >3 μm were implemented in our experiments, enabling us to determine the detector QE in the photon-counting mode, response time, and jitter. For our best 3.5-nm-thick, 10×10 μm2-area devices, QE was found to reach almost 100% for any wavelength shorter than about 800 nm. For longer-wavelength (infrared) radiation, QE decreased exponentially with the photon wavelength increase. Time-resolved measurements of our SSPDs showed that the system-limited detector response pulse width was below 150 ps. The system jitter was measured to be 35 ps. In terms of the counting rate, jitter, and dark counts, the NbN SSPDs significantly outperform their semiconductor counterparts. Already identifeid and implemented applications of our devices range from noninvasive testing of semiconductor VLSI circuits to free-space quantum communications and quantum cryptography.
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Publisher SPIE Place of Publication Editor Spigulis, J.; Teteris, J.; Ozolinsh, M.; Lusis, A.
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
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ISSN ISBN Medium
Area Expedition Conference Advanced Optical Devices, Technologies, and Medical Applications
Notes Approved no
Call Number Serial 1513
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