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Trifonov, Andrey; Tong, C. Edward; Lobanov, Yury; Kaurova, Natalia; Blundell, Raymond; Gol’tsman, Gregory |
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An investigation of the DC and IF performance of silicon-membrane HEB mixer elements |
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Conference Article |
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2015 |
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Proc. 26th Int. Symp. Space Terahertz Technol. |
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Proc. 26th Int. Symp. Space Terahertz Technol. |
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40 |
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silicon-membrane HEB waveguide mixer |
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We report on our initial development towards a 2x2 multi-pixel HEB waveguide mixer for operation at 1.4 THz. We have successfully fabricated devices comprising an NbN bridge integrated with antenna test structure using a silicon membrane as the supporting substrate. DC measurements of the test chips demonstrate critical current from 0.1 – 1mA depending on the size of device, with T c of around 10 K and ΔTc ~ 0.8 K. |
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1160 |
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Fedorov, G.; Kardakova, A.; Gayduchenko, I.; Charayev, I.; Voronov, B.M.; Finkel, M.; Klapwijk, T.M.; Morozov, S.; Presniakov, M.; Bobrinetskiy, I.; Ibragimov, R.; Goltsman, G. |
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Title |
Photothermoelectric response in asymmetric carbon nanotube devices exposed to sub-terahertz radiation |
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Journal Article |
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2013 |
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Appl. Phys. Lett. |
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Appl. Phys. Lett. |
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103 |
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18 |
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181121 (1 to 5) |
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carbon nanotubes, CNT, THz radiation, SiO2 substrate |
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We report on the voltage response of carbon nanotube devices to sub-terahertz (THz) radiation. The devices contain carbon nanotubes (CNTs), which are over their length partially suspended and partially Van der Waals bonded to a SiO2 substrate, causing a difference in thermal contact. We observe a DC voltage upon exposure to 140 GHz radiation. Based on the observed gate voltage and power dependence, at different temperatures, we argue that the observed signal is both thermal and photovoltaic. The room temperature responsivity in the microwave to THz range exceeds that of CNT based devices reported before. Authors thank Professor P. Barbara for providing the catalyst for CNT growth and Dr. N. Chumakov and V. Rylkov for stimulating discussions. The work was supported by the RFBR (Grant No. 12-02-01291-a) and by the Ministry of Education and Science of the Russian Federation (Contract No. 14.B25.31.0007). G.F. acknowledges support of the RFBR grant 12-02-01005-a. |
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0003-6951 |
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1171 |
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Elezov, M. S.; Scherbatenko, M. L.; Sych, D. V.; Goltsman, G. N. |
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Active and passive phase stabilization for the all-fiber Michelson interferometer |
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Conference Article |
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2018 |
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J. Phys.: Conf. Ser. |
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J. Phys.: Conf. Ser. |
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1124 |
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051014 (1 to 5) |
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Michelson interferometer, phase stabilization |
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We put forward two methods for phase stabilization in the all-fiber Michelson interferometer. To perform passive phase stabilization, we use a heat bath for all fibers and electro-optical components, and put the interferometer in a hermetic case. To perform active phase stabilization, we monitor output power of the interferometer and develop an electronic feedback control. The phase stabilization methods enable stable interference pattern for several minutes, and can be helpful for the development of the optimal quantum receiver for coherent signals. |
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1742-6588 |
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1299 |
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Fedder, H.; Oesterwind, S.; Wick, M.; Olbrich, F.; Michler, P.; Veigel, T.; Berroth, M.; Schlagmüller, M. |
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Characterization of electro-optical devices with low jitter single photon detectors – towards an optical sampling oscilloscope beyond 100 GHz |
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2018 |
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ECOC |
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1-3 |
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SSPD, SNSPD, SPAD |
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We showcase an optical random sampling scope that exploits single photon counting and apply it to characterize optical transceivers. We study single photon detectors with a jitter down to 40 ps. The method can be extended beyond 100 GHz. |
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8535415 |
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1198 |
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Kuzin, Aleksei; Elmanov, Ilia; Kovalyuk, Vadim; An, Pavel; Goltsman, Gregory |
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Silicon nitride focusing grating coupler for input and output light of NV-centers |
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2020 |
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Proc. 32-nd EMSS |
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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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