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Author Gol'tsman, G.; Korneev, A.; Minaeva, O.; Antipov, A.; Divochiy, A.; Kaurova, N.; Voronov, B.; Pan, D.; Cross, A.; Pearlman, A.; Komissarov, I.; Slysz, W.; Sobolewski, R.
Title Middle-infrared to visible-light ultrafast superconducting single-photon detector Type Conference Article
Year (up) 2006 Publication Proc. ASC Abbreviated Journal
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Publisher Place of Publication Seattle Editor
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Call Number RPLAB @ s @ SSPD_cavity_ASC Serial 389
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Author Chulkova, G.; Milostnaya, I.; Tarkhov, M.; Korneev, A.; Minaeva, O.; Voronov, B.; Divochiy, A.; Gol'tsman, G.; Kitaygorsky, J.; Pan, D.; Sobolewski, R.
Title Superconducting single-photon nanostructured detectors for advanced optical applications Type Conference Article
Year (up) 2006 Publication Proc. Symposium on Photonics Technologies for 7th Framework Program Abbreviated Journal
Volume 400 Issue Pages
Keywords SSPD, SNSPD
Abstract We present superconducting single-photon detectors (SSPDs) based on NbN thin-film nanostructures and operated at liquid helium temperatures. The SSPDs are made of ultrathin NbN films (2.5-4 nm thick, Tc= 9-11K) as meander-shaped nanowires covering the area of 10× 10 µm2. Our detectors are operated at the temperature well below the critical temperature Tc and are DC biased by a current Ib close to the meander critical current Ic. The operation principle of the detector is based on the use of the resistive region in a narrow ultra-thin superconducting stripe upon the absorption of an incident photon. The developed devices demonstrate high sensitivity and response speed in a broadband range from UV to mid-IR (up to 6 µm), making them very attractive for advanced optical technologies, which require efficient detectors of single quanta and low-density optical radiation.
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Call Number RPLAB @ sasha @ chulkova2006superconducting Serial 1021
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Author Smirnov, K.; Korneev, A.; Minaeva, O.; Divochiy, A.; Tarkhov, M.; Ryabchun, S.; Seleznev, V.; Kaurova, N.; Voronov, B.; Gol'tsman, G.; Polonsky, S.
Title Ultrathin NbN film superconducting single-photon detector array Type Conference Article
Year (up) 2007 Publication J. Phys.: Conf. Ser. Abbreviated Journal J. Phys.: Conf. Ser.
Volume 61 Issue Pages 1081-1085
Keywords SSPD array
Abstract We report on the fabrication process of the 2 × 2 superconducting single-photon detector (SSPD) array. The SSPD array is made from ultrathin NbN film and is operated at liquid helium temperatures. Each detector is a nanowire-based structure patterned by electron beam lithography process. The advances in fabrication technology allowed us to produce highly uniform strips and preserve superconducting properties of the unpatterned film. SSPD exhibit up to 30% quantum efficiency in near infrared and up to 1% at 5-μm wavelength. Due to 120 MHz counting rate and 18 ps jitter, the time-domain multiplexing read-out is proposed for large scale SSPD arrays. Single-pixel SSPD has already found a practical application in non-invasive testing of semiconductor very-large scale integrated circuits. The SSPD significantly outperformed traditional single-photon counting avalanche diodes.
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ISSN 1742-6588 ISBN Medium
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Call Number Serial 408
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Author Gol'tsman, G.; Minaeva, O.; Korneev, A.; Tarkhov, M.; Rubtsova, I.; Divochiy, A.; Milostnaya, I.; Chulkova, G.; Kaurova, N.; Voronov, B.; Pan, D.; Kitaygorsky, J.; Cross, A.; Pearlman, A.; Komissarov, I.; Slysz, W.; Wegrzecki, M.; Grabiec, P.; Sobolewski, R.
Title Middle-infrared to visible-light ultrafast superconducting single-photon detectors Type Journal Article
Year (up) 2007 Publication IEEE Trans. Appl. Supercond. Abbreviated Journal IEEE Trans. Appl. Supercond.
Volume 17 Issue 2 Pages 246-251
Keywords SSPD, SNSPD
Abstract We present an overview of the state-of-the-art of NbN superconducting single-photon detectors (SSPDs). Our devices exhibit quantum efficiency (QE) of up to 30% in near-infrared wavelength and 0.4% at 5 mum, with a dark-count rate that can be as low as 10 -4 s -1 . The SSPD structures integrated with lambda/4 microcavities achieve a QE of 60% at telecommunication, 1550-nm wavelength. We have also developed a new generation of SSPDs that possess the QE of large-active-area devices, but, simultaneously, are characterized by low kinetic inductance that allows achieving short response times and the GHz-counting rate with picosecond timing jitter. The improvements presented in the SSPD development, such as fiber-coupled SSPDs, make our detectors most attractive for high-speed quantum communications and quantum computing.
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ISSN 1051-8223 ISBN Medium
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Call Number Serial 431
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Author Gol’tsman, G.; Korneev, A.; Tarkhov, M.; Seleznev, V.; Divochiy, A.; Minaeva, O.; Kaurova, N.; Voronov, B.; Okunev, O.; Chulkova, G.; Milostnaya, I.; Smirnov, K.
Title Middle-infrared ultrafast superconducting single photon detector Type Conference Article
Year (up) 2007 Publication 32nd IRMW / 15th ICTE Abbreviated Journal 32nd IRMW / 15th ICTE
Volume Issue Pages 115-116
Keywords SSPD, SNSPD
Abstract We present the results of the research on quantum efficiency of the ultrathin-film superconducting single-photon detectors (SSPD) in the wavelength rage from 1 mum to 5.7 mum. Reduction of operation temperature to 1.6 K allowed us to measure quantum efficiency of ~1 % at 5.7 mum wavelength with the SSPD made from 4-nm-thick NbN film. In a pursuit of further performance improvement we endeavored SSPD fabricating from 4-nm-thick MoRe film as an alternative material. The MoRe film exhibited transition temperature of 7.7K, critical current density at 4.2 K temperature was 1.1times10 6 A/cm 2 , and diffusivity 1.73 cmVs. The single-photon response was observed with MoRe SSPD at 1.3 mum wavelength with quantum efficiency estimated to be 0.04%.
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Call Number Serial 1246
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