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Cao, Aiqin; Jiang, L.; Chen, S.H.; Antipov, S.V.; Shi, S.C. |
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Title |
IF gain bandwidth of a quasi-optical NbN superconducting HEB mixer |
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Conference Article |
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Year |
2007 |
Publication |
Proc. International conference on microwave and millimeter wave technology |
Abbreviated Journal |
Proc. ICMMT |
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1-3 |
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HEB, mixer, gain bandwidth |
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In this paper, the intermediate frequency (IF) gain bandwidth of a quasi-optical NbN superconducting hot-electron bolometer (HEB) mixer is investigated at 500 GHz with an IF system incorporating with a frequency down-converting scheme which is able to sweep the IF signal in a frequency range of 0.3-4 GHz. The IF gain bandwidth of the device is measured to be 1.5 GHz when it is biased at a voltage of the minimum noise temperature, and becomes larger when the bias voltage increases. |
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RPLAB @ lobanovyury @ |
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575 |
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Author |
Cherednichenko, Sergey; Drakinskiy, Vladimir; Berg, Therese; Kollberg, Erik L.; Angelov, Iltcho |
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Title |
The direct detection effect in the hot-electron bolometer mixer sensitivity calibration |
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Journal Article |
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2007 |
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IEEE Trans. Microw. Theory Techn. |
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55 |
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3 |
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504-510 |
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Keywords |
HEB, mixer, direct detection effect |
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0018-9480 |
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RPLAB @ lobanovyury @ |
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555 |
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Gao, J. R.; Hajenius, M.; Yang, Z. Q.; Baselmans, J. J. A.; Khosropanah, P.; Barends, R.; Klapwijk, T. M. |
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Title |
Terahertz superconducting hot electron bolometer heterodyne receivers |
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Journal Article |
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Year |
2007 |
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IEEE Trans. Appl. Supercond. |
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17 |
Issue |
2 |
Pages |
252-258 |
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Keywords |
HEB, mixer, direct detection effect |
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We highlight the progress on NbN hot electron bolometer (HEB) mixers achieved through fruitful collaboration between SRON Netherlands Institute for Space Research and Delft University of Technology, the Netherlands. This includes the best receiver noise temperatures of 700 K at 1.63 THz using a twin-slot antenna mixer and 1050 K at 2.84 THz using a spiral antenna coupled HEB mixer. The mixers are based on thin NbN films on Si and fabricated with a new contact-process and-structure. By reducing their areas HEB mixers have shown an LO power requirement as low as 30 nW. Those small HEB mixers have demonstrated equivalent sensitivity as those with large areas provided the direct detection effect due to broadband radiation is removed. To manifest that a HEB based heterodyne receiver can in practice be used at arbitrary frequencies above 2 THz, we demonstrate a 2.8 THz receiver using a THz quantum cascade laser (QCL) as local oscillator. |
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1051-8223 |
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RPLAB @ asmirn @ |
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557 |
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Semenov, Alexei D.; Richter, Heiko; Hubers, Heinz-Wilhelm; Gunther, Burghardt.; Smirnov, Andrey; Il'in, Konstantin S.; Siegel, Michael; Karamarkovic, Jugoslav P. |
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Title |
Terahertz performance of integrated lens antennas with a hot-electron bolometer |
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Journal Article |
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2007 |
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IEEE Trans. Microw. Theory Techn. |
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55 |
Issue |
2 |
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239-247 |
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HEB, lens antenna |
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0018-9480 |
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538 |
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Масленников, Сергей Николаевич |
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Смесители на эффекте электронного разогрева для терагерцового и инфракрасного диапазонов |
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2007 |
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М. МПГУ |
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HEB, detector, mixer, terahertz, THz, infrared, IR, direct detection effect, conversion loss |
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Ph.D. thesis |
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Russian |
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481 |
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Finkel, M. I.; Maslennikov, S. N.; Gol'tsman, G. N. |
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The concept of the receiving complex for the “Millimetron” space radio telescope |
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Journal Article |
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Year |
2007 |
Publication |
Radiophys. Quant. Electron. |
Abbreviated Journal |
Radiophys. Quant. Electron. |
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50 |
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10-11 |
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837-846 |
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HEB, applications, Millimetron, VLBI |
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We consider the current status of research in the development of a submillimeter and far-infrared receiving instrument and propose promising solutions for the receivers of the spaceborne telescope “Millimetron,” which allow one to realize comprehensively the opportunities given by this international project administrated by the Astrospace Center of the P. N. Lebedev Physical Institute of the Russian Academy of Sciences. |
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0033-8443 |
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411 |
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ГОСТ 3.1119-83. ЕСТД. Общие требования к комплектности и оформлению комплектов документов на единичные технологические процессы |
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2007 |
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gost, detproj |
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869 |
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Lu, Chao-Yang; Zhou, Xiao-Qi; Gühne, Otfried; Gao, Wei-Bo; Zhang, Jin; Yuan, Zhen-Sheng; Goebel, Alexander; Yang, Tao; Pan, Jian-Wei |
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Experimental entanglement of six photons in graph states |
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2007 |
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Nature Physics |
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Nat. Phys. |
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3 |
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2 |
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91-95 |
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fromIPMRAS |
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Graph states-multipartite entangled states that can be represented by mathematical graphs-are important resources for quantum computation, quantum error correction, studies of multiparticle entanglement and fundamental tests of non-locality and decoherence. Here, we demonstrate the experimental entanglement of six photons and engineering of multiqubit graph states. We have created two important examples of graph states, a six-photon Greenberger-Horne-Zeilinger state, the largest photonic Schrödinger cat so far, and a six-photon cluster state, a state-of-the-art `one-way quantum computer'. With small modifications, our method allows us, in principle, to create various further graph states, and therefore could open the way to experimental tests of, for example, quantum algorithms or loss- and fault-tolerant one-way quantum computation. |
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RPLAB @ gujma @ |
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796 |
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Ursin, R.; Tiefenbacher, F.; Schmitt-Manderbach, T.; Weier, H.; Scheidl, T.; Lindenthal, M.; Blauensteiner, B.; Jennewein, T.; Perdigues, J.; Trojek, P.; Ömer, B.; Fürst, M.; Meyenburg, M.; Rarity, J.; Sodnik, Z.; Barbieri, C.; Weinfurter, H.; Zeilinger, A. |
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Entanglement-based quantum communication over 144km |
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2007 |
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Nature Physics |
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Nat. Phys. |
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3 |
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7 |
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481-486 |
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fromIPMRAS |
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Quantum entanglement is the main resource to endow the field of quantum information processing with powers that exceed those of classical communication and computation. In view of applications such as quantum cryptography or quantum teleportation, extension of quantum-entanglement-based protocols to global distances is of considerable practical interest. Here we experimentally demonstrate entanglement-based quantum key distribution over 144km. One photon is measured locally at the Canary Island of La Palma, whereas the other is sent over an optical free-space link to Tenerife, where the Optical Ground Station of the European Space Agency acts as the receiver. This exceeds previous free-space experiments by more than an order of magnitude in distance, and is an essential step towards future satellite-based quantum communication and experimental tests on quantum physics in space. |
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RPLAB @ gujma @ |
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797 |
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Huard, B.; Pothier, H.; Esteve, D.; Nagaev, K. E. |
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Electron heating in metallic resistors at sub-Kelvin temperature |
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2007 |
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Phys. Rev. B |
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Phys. Rev. B |
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76 |
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165426(1-9) |
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electron heating in resistor, HEB distributed model, HEB model, hot electrons |
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In the presence of Joule heating, the electronic temperature in a metallic resistor placed at sub-Kelvin temperatures can significantly exceed the phonon temperature. Electron cooling proceeds mainly through two processes: electronic diffusion to and from the connecting wires and electron-phonon coupling. The goal of this paper is to present a general solution of the problem in a form that can easily be used in practical situations. As an application, we compute two quantities that depend on the electronic temperature profile: the second and the third cumulant of the current noise at zero frequency, as a function of the voltage across the resistor. We also consider time-dependent heating, an issue relevant for experiments in which current pulses are used, for instance, in time-resolved calorimetry experiments. |
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Recommended by Klapwijk as example for writing the article on the HEB model. |
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936 |
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