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Goltsman, Gregory |
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Superconducting thin film nanostructures as terahertz and infrared heterodyne and direct detectors |
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2017 |
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16th ISEC |
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16th ISEC |
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Th-I-QTE-03 (1 to 3) |
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waveguide SSPD, SNSPD |
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We present our recent achievements in the development of superconducting nanowire single-photon detectors (SNSPDs) integrated with optical waveguides on a chip. We demonstrate both single-photon counting with up to 90% on-chipquantum-efficiency (OCDE), and the heterodyne mixing with a close to the quantum limit sensitivity at the telecommunication wavelength using single device. |
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IEEE/CSC & ESAS Superconductivity News Forum |
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1745 |
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Author |
Goltsman, Gregory N. |
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Title |
Development and applications of terahertz hot electron bolometers |
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2021 |
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1st Moscow Int. Conf. on Submillimeter and Millimeter Astronomy: Objectives and Instruments |
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1st Moscow Int. Conf. on Submillimeter and Millimeter Astronomy: Objectives and Instruments |
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The development of techniques and technologies for the deposition of ultrathin superconducting films, the creation of superconducting structures on a nanometer scale is the basis of significant progress in the field of superconducting receiving systems. Ultrathin NbN films are the basis for a wide range of record-breaking hot electron devices: direct and heterodyne terahertz detectors. Terahertz receivers are especially in demand in high-resolution spectroscopy for astronomical, atmospheric, and medical research. HEB receivers are widely used in terahertz radio astronomy. For example, the Dutch SRON Institute is preparing a project for the GUSTO hot air balloon telescope with a HEB mixer array at 1.4 THz and 1.9 THz. A 5-meter Chinese terahertz telescope DATE5 with HEB mixers at 1.4 THz is installed at the South Pole. The Stratospheric Observatory (SOFIA) uses HEB mixer matrices in the GREAT instrument operating in the 1.2 – 4.7 THz range. It is planned to implement the international project Origins Space Telescope (OST) in the far infrared region based on HEB receivers. The Japanese project Smiles-2 will allow measurements at 1.8 THz in the upper layers of the stratosphere and mesosphere. The development of the Millimetron space observatory continues in Russia. |
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First Moscow International Conference on Submillimeter and Millimeter Astronomy: Objectives and Instruments, Astro Space Center, Moscow, 12-16 April 2021, id. 2 |
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Downloaded from https://millimetron.ru/conference_2021/Goltsman.pdf; Author: Sergey; Last modification: 2021-04-14 |
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1771 |
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Goltsman, Gregory N.; Vachtomin, Yuriy B.; Antipov, Sergey V.; Finkel, Matvey I.; Maslennikov, Sergey N.; Polyakov, Stanislav L.; Svechnikov, Sergey I.; Kaurova, Natalia S.; Grishina, Elisaveta V.; Voronov, Boris M. |
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Low-noise NbN phonon-cooled hot-electron bolometer mixers for terahertz heterodyne receivers |
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2005 |
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Proc. 9-th WMSCI |
Abbreviated Journal |
Proc. 9-th WMSCI |
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9 |
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154-159 |
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NbN HEB mixers |
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International Institute of Informatics and Systemics |
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547 |
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Korneeva, Yuliya; Florya, Irina; Vdovichev, Sergey; Moshkova, Mariya; Simonov, Nikita; Kaurova, Natalia; Korneev, Alexander; Goltsman, Gregory |
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Title |
Comparison of hot-spot formation in NbN and MoN thin superconducting films after photon absorption |
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Conference Article |
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2017 |
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IEEE Transactions on Applied Superconductivity |
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IEEE Transactions on Applied Superconductiv |
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27 |
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4 |
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5 |
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Keywords |
Thin film devices, Superconducitng photoncounting devices, Nanowire single-photon detectors |
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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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RPLAB @ kovalyuk @ |
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1114 |
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Author |
Kuzin, Aleksei; Elmanov, Ilia; Kovalyuk, Vadim; An, Pavel; Goltsman, Gregory |
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Title |
Silicon nitride focusing grating coupler for input and output light of NV-centers |
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Conference Article |
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2020 |
Publication |
Proc. 32-nd EMSS |
Abbreviated Journal |
Proc. 32-nd EMSS |
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349-353 |
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NV-centers, focusing grating coupler |
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Here we presented the numerical results for the calculation of focusing grating coupler efficiency in the visible wavelength range. Using the finite element method, the optimal geometric parameters, including filling factor and grating period for a central wavelength of 637 nm, were found. Obtained results allow to input/output single-photon radiation from NV-centers, and can be used for research and development of a scalable on-chip quantum optical computing. |
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2724-0029 |
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978-88-85741-44-7 |
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32nd European Modeling & Simulation Symposium |
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1841 |
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