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Author | Minaeva, O.; Fraine, A.; Korneev, A.; Divochiy, A.; Goltsman, G.; Sergienko, A. | ||||
Title | High resolution optical time-domain reflectometry using superconducting single-photon detectors | Type ![]() |
Conference Article | ||
Year | 2012 | Publication | Frontiers in Opt. 2012/Laser Sci. XXVIII | Abbreviated Journal | Frontiers in Opt. 2012/Laser Sci. XXVIII |
Volume | Issue | Pages | Fw3a.39 | ||
Keywords | SSPD, SNSPD, Photodetectors; Fiber characterization; Light beams; Optical time domain reflectometry; Photon counting; Single mode fibers; Single photon detectors; Superconductors | ||||
Abstract | We discuss the advantages and limitations of single-photon optical time-domain reflectometry with superconducting single-photon detectors. The higher two-point resolution can be achieved due to superior timing performance of SSPDs in comparison with InGaAs APDs. | ||||
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Publisher | Optical Society of America | Place of Publication | Editor | ||
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Notes | Approved | no | |||
Call Number | Serial | 1237 | |||
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Author | Korneev, A.; Divochiy, A.; Tarkhov, M.; Minaeva, O.; Seleznev, V.; Kaurova, N.; Voronov, B.; Okunev, O.; Chulkova, G.; Milostnaya, I.; Smirnov, K.; Gol’tsman, G. | ||||
Title | Superconducting NbN-nanowire single-photon detectors capable of photon number resolving | Type ![]() |
Conference Article | ||
Year | 2008 | Publication | Supercond. News Forum | Abbreviated Journal | Supercond. News Forum |
Volume | Issue | Pages | |||
Keywords | PNR SSPD, SNSPD | ||||
Abstract | We present our latest generation of ultra-fast superconducting NbN single-photon detectors (SSPD) capable of photon-number resolving (PNR). The novel SSPDs combine 10 μm x 10 μm active area with low kinetic inductance and PNR capability. That resulted in significantly reduced photoresponse pulse duration, allowing for GHz counting rates. The detector’s response magnitude is directly proportional to the number of incident photons, which makes this feature easy to use. We present experimental data on the performance of the PNR SSPDs. These detectors are perfectly suited for fibreless free-space telecommunications, as well as for ultra-fast quantum cryptography and quantum computing. | ||||
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Notes | Reference No. ST34, paper # 012307, eventually not pulished (skipped) at https://iopscience.iop.org/issue/0953-2048/21/1 | Approved | no | ||
Call Number | RPLAB @ sasha @ korneevsuperconducting | Serial | 1046 | ||
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Author | Lobanov, Y. V.; Shcherbatenko, M. L.; Semenov, A. V.; Kovalyuk, V. V.; Korneev, A. A.; Goltsman, G. N.; Vinogradov, E. A.; Naumov, A. V.; Gladush, M. G.; Karimullin, K. R. | ||||
Title | Heterodyne spectroscopy with superconducting single-photon detector | Type ![]() |
Conference Article | ||
Year | 2017 | Publication | EPJ Web Conf. | Abbreviated Journal | EPJ Web Conf. |
Volume | 132 | Issue | Pages | 01005 | |
Keywords | SSPD mixer, SNSPD | ||||
Abstract | We demonstrate successful operation of a Superconducting Single Photon Detector (SSPD) as the core element in a heterodyne receiver. Irradiating the SSPD by both a local oscillator power and signal power simultaneously, we observed beat signal at the intermediate frequency of a few MHz. Gain bandwidth was found to coincide with the detector single pulse width, where the latter depends on the detector kinetic inductance, determined by the superconducting nanowire length. | ||||
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Series Volume | Series Issue | Edition | |||
ISSN | 2100-014X | ISBN | Medium | ||
Area | Expedition | Conference | |||
Notes | Approved | no | |||
Call Number | Serial | 1205 | |||
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Author | Korneeva, Yuliya; Florya, Irina; Vdovichev, Sergey; Moshkova, Mariya; Simonov, Nikita; Kaurova, Natalia; Korneev, Alexander; Goltsman, Gregory | ||||
Title | Comparison of hot-spot formation in NbN and MoN thin superconducting films after photon absorption | Type ![]() |
Conference Article | ||
Year | 2017 | Publication | IEEE Transactions on Applied Superconductivity | Abbreviated Journal | IEEE Transactions on Applied Superconductiv |
Volume | 27 | Issue | 4 | Pages | 5 |
Keywords | Thin film devices, Superconducitng photoncounting devices, Nanowire single-photon detectors | ||||
Abstract | In superconducting single-photon detectors SSPD the efficiency of local suppression of superconductivity and hotspot formation is controlled by diffusivity and electron-phonon interaction time. Here we selected a material, 3.6-nm-thick MoNx film, which features diffusivity close to those of NbN traditionally used for SSPD fabrication, but with electron-phonon interaction time an order of magnitude larger. In MoNx detectors we study the dependence of detection efficiency on bias current, photon energy, and strip width and compare it with NbN SSPD. We observe non-linear current-energy dependence in MoNx SSPD and more pronounced plateaus in dependences of detection efficiency on bias current which we attribute to longer electronphonon interaction time. |
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Notes | Approved | no | |||
Call Number | RPLAB @ kovalyuk @ | Serial | 1114 | ||
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Author | Shcherbatenko, M.; Lobanov, Y.; Semenov, A.; Kovalyuk, V.; Korneev, A.; Ozhegov, R.; Kaurova, N.; Voronov, B.; Goltsman, G. | ||||
Title | Coherent detection of weak signals with superconducting nanowire single photon detector at the telecommunication wavelength | Type ![]() |
Conference Article | ||
Year | 2017 | Publication | Proc. SPIE | Abbreviated Journal | Proc. SPIE |
Volume | 10229 | Issue | Pages | 0G (1 to 12) | |
Keywords | SSPD mixer, SNSPD, coherent detection, weak signal detection, superconducting nanostructures | ||||
Abstract | Achievement of the ultimate sensitivity along with a high spectral resolution is one of the frequently addressed problems, as the complication of the applied and fundamental scientific tasks being explored is growing up gradually. In our work, we have investigated performance of a superconducting nanowire photon-counting detector operating in the coherent mode for detection of weak signals at the telecommunication wavelength. Quantum-noise limited sensitivity of the detector was ensured by the nature of the photon-counting detection and restricted by the quantum efficiency of the detector only. Spectral resolution given by the heterodyne technique and was defined by the linewidth and stability of the Local Oscillator (LO). Response bandwidth was found to coincide with the detector’s pulse width, which, in turn, could be controlled by the nanowire length. In addition, the system noise bandwidth was shown to be governed by the electronics/lab equipment, and the detector noise bandwidth is predicted to depend on its jitter. As have been demonstrated, a very small amount of the LO power (of the order of a few picowatts down to hundreds of femtowatts) was required for sufficient detection of the test signal, and eventual optimization could lead to further reduction of the LO power required, which would perfectly suit for the foreseen development of receiver matrices and the need for detection of ultra-low signals at a level of less-than-one-photon per second. | ||||
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Publisher | Spie | Place of Publication | Editor | Prochazka, I.; Sobolewski, R.; James, R.B. | |
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ISSN | ISBN | Medium | |||
Area | Expedition | Conference | Photon counting applications | ||
Notes | Approved | no | |||
Call Number | 10.1117/12.2267724 | Serial | 1201 | ||
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