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Jiang, L.; Zhang, W.; Yao, Q. J.; Lin, Z. H.; Li, J.; Shi, S. C.; Svechnikov, S. I.; Vachtomin, Y. B.; Antipov, S. V.; Voronov, B. M.; Kaurova, N. S.; Gol'tsman, G. N. |
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Title |
Characterization of a quasi-optical NbN superconducting hot-electron bolometer mixer |
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Conference Article |
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Year |
2005 |
Publication |
Proc. PIERS |
Abbreviated Journal |
Proc. PIERS |
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Volume |
1 |
Issue |
5 |
Pages |
587-590 |
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Keywords |
NbN HEB mixers |
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Abstract |
In this paper, we report the performance of a quasi-optical NbN superconducting HEB (hot electron bolome-ter) mixer measured at 500 GHz. The quasi-optical NbN superconducting HEB mixer is cryogenically cooled bya 4-K close-cycled refrigerator. Its receiver noise temperature and conversion gain are thoroughly investigatedfor different LO pumping levels and dc biases. The lowest receiver noise temperature is found to be approxi-mately 1200 K, and reduced to about 445 K after correcting theloss of the measurement system. The stabilityof the mixer’s IF output power is also demonstrated. |
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Hangzhou, China |
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1931-7360 |
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Progress In Electromagnetics Research Symposium |
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1482 |
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Author |
Kovalyuk, V.; Hartmann, W.; Kahl, O.; Kaurova, N.; Korneev, A.; Goltsman, G.; Pernice, W. H. P. |
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Title |
Absorption engineering of NbN nanowires deposited on silicon nitride nanophotonic circuits |
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Journal Article |
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Year |
2013 |
Publication |
Opt. Express |
Abbreviated Journal |
Opt. Express |
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21 |
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19 |
Pages |
22683-22692 |
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Keywords |
SSPD, SNSPD, NbN nanoeires, Si3N4 waveguides |
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Abstract |
We investigate the absorption properties of U-shaped niobium nitride (NbN) nanowires atop nanophotonic circuits. Nanowires as narrow as 20nm are realized in direct contact with Si3N4 waveguides and their absorption properties are extracted through balanced measurements. We perform a full characterization of the absorption coefficient in dependence of length, width and separation of the fabricated nanowires, as well as for waveguides with different cross-section and etch depth. Our results show excellent agreement with finite-element analysis simulations for all considered parameters. The experimental data thus allows for optimizing absorption properties of emerging single-photon detectors co-integrated with telecom wavelength optical circuits. |
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1094-4087 |
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PMID:24104155 |
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1213 |
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Tretyakov, I.; Svyatodukh, S.; Perepelitsa, A.; Ryabchun, S.; Kaurova, N.; Shurakov, A.; Smirnov, M.; Ovchinnikov, O.; Goltsman, G. |
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Title |
Ag2S QDs/Si heterostructure-based ultrasensitive SWIR range detector |
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Journal Article |
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2020 |
Publication |
Nanomaterials (Basel) |
Abbreviated Journal |
Nanomaterials (Basel) |
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Volume |
10 |
Issue |
5 |
Pages |
1-12 |
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Keywords |
detector; quantum dots; short-wave infrared range; silicon |
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Abstract |
In the 20(th) century, microelectronics was revolutionized by silicon-its semiconducting properties finally made it possible to reduce the size of electronic components to a few nanometers. The ability to control the semiconducting properties of Si on the nanometer scale promises a breakthrough in the development of Si-based technologies. In this paper, we present the results of our experimental studies of the photovoltaic effect in Ag2S QD/Si heterostructures in the short-wave infrared range. At room temperature, the Ag2S/Si heterostructures offer a noise-equivalent power of 1.1 x 10(-10) W/ radicalHz. The spectral analysis of the photoresponse of the Ag2S/Si heterostructures has made it possible to identify two main mechanisms behind it: the absorption of IR radiation by defects in the crystalline structure of the Ag2S QDs or by quantum QD-induced surface states in Si. This study has demonstrated an effective and low-cost way to create a sensitive room temperature SWIR photodetector which would be compatible with the Si complementary metal oxide semiconductor technology. |
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Laboratory of nonlinear optics, Zavoisky Physical-Technical Institute of the Russian Academy of Sciences, Kazan 420029, Russia |
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English |
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2079-4991 |
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PMID:32365694; PMCID:PMC7712218 |
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no |
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1151 |
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Matyushkin, Y.; Danilov, S.; Moskotin, M.; Belosevich, V.; Kaurova, N.; Rybin, M.; Obraztsova, E. D.; Fedorov, G.; Gorbenko, I.; Kachorovskii, V.; Ganichev, S. |
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Title |
Helicity-sensitive plasmonic terahertz interferometer |
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Journal Article |
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Year |
2020 |
Publication |
Nano Lett. |
Abbreviated Journal |
Nano Lett. |
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Volume |
20 |
Issue |
10 |
Pages |
7296-7303 |
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Keywords |
graphene, plasmonic interferometer, radiation helicity, terahertz radiation |
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Plasmonic interferometry is a rapidly growing area of research with a huge potential for applications in the terahertz frequency range. In this Letter, we explore a plasmonic interferometer based on graphene field effect transistor connected to specially designed antennas. As a key result, we observe helicity- and phase-sensitive conversion of circularly polarized radiation into dc photovoltage caused by the plasmon-interference mechanism: two plasma waves, excited at the source and drain part of the transistor, interfere inside the channel. The helicity-sensitive phase shift between these waves is achieved by using an asymmetric antenna configuration. The dc signal changes sign with inversion of the helicity. A suggested plasmonic interferometer is capable of measuring the phase difference between two arbitrary phase-shifted optical signals. The observed effect opens a wide avenue for phase-sensitive probing of plasma wave excitations in two-dimensional materials. |
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CENTERA Laboratories, Institute of High Pressure Physics, PAS, 01-142 Warsaw, Poland |
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1530-6984 |
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PMID:32903004 |
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1781 |
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Marsili, F.; Bitauld, D.; Divochiy, A.; Gaggero, A.; Leoni, R.; Mattioli, F.; Korneev, A.; Seleznev, V.; Kaurova, N.; Minaeva, O.; Gol’tsman, G.; Lagoudakis, K.G.; Benkahoul, M.; Lévy, F.; Fiore, A. |
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Title |
Superconducting nanowire photon number resolving detector at telecom wavelength |
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Conference Article |
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Year |
2008 |
Publication |
CLEO/QELS |
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CLEO/QELS |
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Qmj1 (1 to 2) |
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PNR SSPD; SNSPD; Detectors; Infrared; Low light level; Diode lasers; Photons; Scanning electron microscopy; Superconductors; Ti:sapphire lasers |
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Abstract |
We demonstrate a photon-number-resolving (PNR) detector, based on parallel superconducting nanowires, capable of resolving up to 5 photons in the telecommunication wavelength range, with sensitivity and speed far exceeding existing approaches. |
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Optical Society of America |
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978-1-55752-859-9 |
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Marsili:08 |
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1243 |
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