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Xu, Y.; Zheng, X.; Williams, C.; Verevkin, A.; Sobolewski, R.; Chulkova, G.; Lipatov, A.; Okunev, O.; Smirnov, K.; Gol’tsman, G. N. |
![goto web page (via DOI) doi](img/doi.gif)
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Title |
Ultrafast superconducting hot-electron single-photon detector |
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Conference Article |
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Year |
2001 |
Publication |
CLEO |
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CLEO |
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345 |
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NbN SSPD, SNSPD |
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Summary form only given. The current most-pressing need is to develop a practical, GHz-range counting single-photon detector, operational at either 1.3-/spl mu/m or 1.55-/spl mu/m radiation wavelength, for novel quantum communication and quantum cryptography systems. The presented solution of the problem is to use an ultrafast hot-electron photodetector, based on superconducting thin-film microstructures. This type of device is very promising, due to the macroscopic quantum nature of superconductors. Very fast response time and the small, (meV range) value of the superconducting energy gap characterize the superconductor, leading to the efficient avalanche process even for infrared photons. |
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Technical Digest. Summaries of papers presented at the Conference on Lasers and Electro-Optics. Postconference Technical Digest (IEEE Cat. No.01CH37170) |
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no |
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1545 |
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Ganzevles, W. F. M.; Gao, J. R.; de Korte, P. A. J.; Klapwijk, T. M. |
![goto web page (via DOI) doi](img/doi.gif)
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Title |
Direct response of microstrip line coupled Nb THz hot-electron bolometer mixers |
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Journal Article |
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Year |
2001 |
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Applied Physics Letters |
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Appl. Phys. Lett. |
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79 |
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15 |
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2483-2485 |
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0003-6951 |
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311 |
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Zwiller, Vale<cc><81>ry; Blom, Hans; Jonsson, Per; Panev, Nikolay; Jeppesen, Sören; Tsegaye, Tedros; Goobar, Edgard; Pistol, Mats-Erik; Samuelson, Lars; Björk, Gunnar |
![goto web page (via DOI) doi](img/doi.gif)
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Title |
Single quantum dots emit single photons at a time: Antibunching experiments |
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Journal Article |
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2001 |
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Applied Physics Letters |
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Appl. Phys. Lett. |
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78 |
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17 |
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2476 |
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antibunching, quantum dot |
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0003-6951 |
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502 |
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Gol’tsman, G. N.; Okunev, O.; Chulkova, G.; Lipatov, A.; Semenov, A.; Smirnov, K.; Voronov, B.; Dzardanov, A.; Williams, C.; Sobolewski, R. |
![goto web page (via DOI) doi](img/doi.gif)
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Title |
Picosecond superconducting single-photon optical detector |
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Journal Article |
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Year |
2001 |
Publication |
Appl. Phys. Lett. |
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Appl. Phys. Lett. |
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79 |
Issue |
6 |
Pages |
705-707 |
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NbN SSPD, SNSPD |
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We experimentally demonstrate a supercurrent-assisted, hotspot-formation mechanism for ultrafast detection and counting of visible and infrared photons. A photon-induced hotspot leads to a temporary formation of a resistive barrier across the superconducting sensor strip and results in an easily measurable voltage pulse. Subsequent hotspot healing in ∼30 ps time frame, restores the superconductivity (zero-voltage state), and the detector is ready to register another photon. Our device consists of an ultrathin, very narrow NbN strip, maintained at 4.2 K and current-biased close to the critical current. It exhibits an experimentally measured quantum efficiency of ∼20% for 0.81 μm wavelength photons and negligible dark counts. |
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0003-6951 |
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1543 |
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Siemsen, K. J.; Bernard, J. E.; Madej, A. A.; Marmet, L. |
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Absolute frequency measurement of a CO2/OsO4 stabilized laser at 28.8 THz |
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2001 |
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Applied Physics B: Lasers and Optics |
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Appl. Phys. B: Lasers and Optics |
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72 |
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567-573 |
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HgCdTe detector |
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462 |
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Shelkovnikov, A.; Grain, C.; Nguyen, C. T.; Butcher, R. J.; Amy-Klein, A.; Chardonnet, C. |
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Title |
500-Hz two-photon Ramsey fringes with a SF6 beam: towards a new frequency standard in the 30-THz spectral region |
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Journal Article |
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2001 |
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Applied Physics B: Lasers and Optics |
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Appl. Phys. B: Lasers and Optics |
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73 |
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93-98 |
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THz applications |
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485 |
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Author |
Chen, P. S. |
![goto web page (via DOI) doi](img/doi.gif)
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Title |
Infrared properties of barium stars |
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Journal Article |
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2001 |
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Astron. Astrophys. |
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A&A |
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372 |
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1 |
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245-248 |
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0004-6361 |
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RPLAB @ s @ |
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415 |
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Hsiao, F.Z.; Lin, M.C.; Wang, C.; Lee, D.S.; Chen, J.R.; Hilbert, B.; Praud, A. |
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The liquid helium cryogenic system for the superconducting cavity in SRRC |
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Conference Article |
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2001 |
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Proc. Particle Accelerator Conference |
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2 |
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1604-1606 |
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A 500 MHz superconducting cavity will replace the current copper cavity and begin to operate in the beginning of the year 2003. A liquid helium cryogenic system provides the cavity at 4.5 K a cooling capacity of 255 W without LN2 pre-cooling and a liquefaction rate of 110 liter/hour with LN2 pre-cooling. A safety factor of 1.5 is used to estimate the heat load from the superconducting cavity and the heat loss from the transfer lines. With the LN2 pre-cooling, this cooling system provides a cooling capacity of up to 450 W to cool down the additional superconducting Landau cavity. The capacity of the system can be tuned using a frequency driver installed at the compressor station. The pressure fluctuations of the dewar and of the suction line are kept to the same stability requirement that of the cavity cryostat to minimize the influence in cavity operation. A shutdown period for maintenance of more than 8000 hours for the cryogenic system is expected without interfering with the continuous operation of the superconducting cavity. |
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RPLAB @ s @ |
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426 |
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Author |
Kroug, M. |
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Title |
Hot electron bolometric mixers for a quasi-optical terahertz receiver |
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Book Whole |
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2001 |
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Ph.D. thesis |
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Chalmers University of Technology, Gothenburg, Sweden |
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310 |
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Author |
Van Rudd, J.; Johnson, Jon L.; Mittleman, Daniel M. |
![goto web page (via DOI) doi](img/doi.gif)
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Title |
Cross-polarized angular emission patterns from lens-coupled terahertz antennas |
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Journal Article |
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2001 |
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J. Opt. Soc. Am. B |
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18 |
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10 |
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1524 |
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0740-3224 |
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475 |
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