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Loudkov, D.; Tong, C. Y. E.; Blundell, R.; Kaurova, N.; Grishina, E.; Voronov, B.; Gol'tsman, G. |
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An investigation of the performance of the superconducting HEB슠mixer as a function of its RF슠embedding impedance |
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2005 |
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IEEE Trans. Appl. Supercond. |
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15 |
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2 |
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472-475 |
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HEB mixer |
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371 |
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Torgashin, M. Yu.; Koshelets, V. P.; Dmitriev, P. N.; Ermakov, A. B.; Filippenko, L. V.; Yagoubov, P. A. |
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Superconducting integrated receivers based on Nb-AlN-NbN circuits |
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Journal Article |
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2007 |
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IEEE Trans. Appl. Supercond. |
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17 |
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2 |
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379-382 |
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RPLAB @ s @ mix_SIR_ieee_trans_2007 |
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406 |
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Hans Ekstrom; Karasik, Boris S.; Kollberg, Erik L.; Sigfrid Yngvesson |
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Title |
Conversion gain and noise of niobium superconducting hot–electron–mixers |
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Journal Article |
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Year |
1995 |
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IEEE Trans. Appl. Supercond. |
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43 |
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4 |
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938-947 |
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Nb HEB mixers |
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254 |
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Sobolewski, R.; Verevkin, A.; Gol'tsman, G.N.; Lipatov, A.; Wilsher, K. |
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Title |
Ultrafast superconducting single-photon optical detectors and their applications |
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Journal Article |
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2003 |
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IEEE Trans. Appl. Supercond. |
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Volume |
13 |
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2 |
Pages |
1151-1157 |
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NbN SSPD, SNSPD |
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We present a new class of ultrafast single-photon detectors for counting both visible and infrared photons. The detection mechanism is based on photon-induced hotspot formation, which forces the supercurrent redistribution and leads to the appearance of a transient resistive barrier across an ultrathin, submicrometer-width, superconducting stripe. The devices were fabricated from 3.5-nm- and 10-nm-thick NbN films, patterned into <200-nm-wide stripes in the 4 /spl times/ 4-/spl mu/m/sup 2/ or 10 /spl times/ 10-/spl mu/m/sup 2/ meander-type geometry, and operated at 4.2 K, well below the NbN critical temperature (T/sub c/=10-11 K). Continuous-wave and pulsed-laser optical sources in the 400-nm-to 3500-nm-wavelength range were used to determine the detector performance in the photon-counting mode. Experimental quantum efficiency was found to exponentially depend on the photon wavelength, and for our best, 3.5-nm-thick, 100-/spl mu/m/sup 2/-area devices varied from >10% for 405-nm radiation to 3.5% for 1550-nm photons. The detector response time and jitter were /spl sim/100 ps and 35 ps, respectively, and were acquisition system limited. The dark counts were below 0.01 per second at optimal biasing. In terms of the counting rate, jitter, and dark counts, the NbN single-photon detectors significantly outperform their semiconductor counterparts. Already-identified applications for our devices range from noncontact testing of semiconductor CMOS VLSI circuits to free-space quantum cryptography and communications. |
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1051-8223 |
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509 |
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Karpov, A.; Blondel, J.; Voss, M.; Gundlach, K. H. |
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Title |
A three photon noise SIS heterodyne receiver at submillimeter wavelength |
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Journal Article |
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1999 |
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IEEE Trans. Appl. Supercond. |
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9 |
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2 |
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4456-4459 |
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RPLAB @ s @ sis_Karpov_1999 |
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300 |
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Shitov, S. V.; Levitchev, M.; Veretennikov, A. V.; Koshelets, V. P.; Prokopenko, G. V.; Filippenko, L. V.; Ermakov, A. B.; Shtanyuk, A. M.; Kohlstedt, H.; Ustinov, A. V. |
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Title |
Superconducting integrated receiver as 400-600 GHz tester for coolable devices |
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Journal Article |
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2001 |
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IEEE Trans. Appl. Supercond. |
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11 |
Issue |
1 |
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832-835 |
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RPLAB @ s @ sis_Shitov_2001 |
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313 |
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Semenov, A. D.; Hübers, Heinz-Wilhelm; Richter, H.; Birk, M.; Krocka, M.; Mair, U.; Vachtomin, Yu. B.; Finkel, M. I.; Antipov, S. V.; Voronov, B. M.; Smirnov, K. V.; Kaurova, N. S.; Drakinski, V. N.; Gol'tsman, G. N. |
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Title |
Superconducting hot-electron bolometer mixer for terahertz heterodyne receivers |
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Journal Article |
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Year |
2003 |
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IEEE Trans. Appl. Supercond. |
Abbreviated Journal |
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13 |
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2 |
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168-171 |
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NbN HEB mixers |
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We present recent results showing the development of superconducting NbN hot-electron bolometer mixer for German receiver for astronomy at terahertz frequencies and terahertz limb sounder. The mixer is incorporated into a planar feed antenna, which has either logarithmic spiral or double-slot configuration, and backed on a silicon lens. The hybrid antenna had almost frequency independent and symmetric radiation pattern slightly broader than expected for a diffraction limited antenna. At 2.5 THz the best 2200 K double side-band receiver noise temperature was achieved across a 1 GHz intermediate frequency bandwidth centred at 1.5 GHz. For this operation regime, a receiver conversion efficiency of -17 dB was directly measured and the loss budget was evaluated. The mixer response was linear at load temperatures smaller than 400 K. Implementation of the MgO buffer layer on Si resulted in an increased 5.2 GHz gain bandwidth. The receiver was tested in the laboratory environment by measuring a methanol emission line at 2.5 THz. |
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343 |
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Datesman, A.M.; Schultz, J.C.; Lichtenberger, A.W.; Golish, D.; Walker, C.K.; Kooi, J. |
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Fabrication and characterization of niobium diffusion-cooled hot-electron bolometers on silicon nitride membranes |
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2005 |
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IEEE Trans. Appl. Supercond. |
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Volume |
15 |
Issue |
2 |
Pages |
928-931 |
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1051-8223 |
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439 |
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Koshelets, V.P.; Dmitriev, P.N.; Ermakov, A.B.; Sobolev, A.S.; Torgashin, M.Y.; Kurin, V.V.; Pankratov, A.L.; Mygind, J. |
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Optimization of the phase-locked flux-flow oscillator for the submm integrated receiver |
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Journal Article |
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2005 |
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IEEE Trans. Appl. Supercond. |
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Volume |
15 |
Issue |
2 |
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964-967 |
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SIR |
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1051-8223 |
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515 |
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Koshelets, V. P.; Shitov, S. V.; Ermakov, A. B.; Filippenko, L. V.; Koryukin, O. V.; Khudchenko, A. V.; Torgashin, M. Yu.; Yagoubov, P. A.; Hoogeveen, R. W. M.; Pylypenko, O. M. |
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Superconducting integrated receiver for TELIS |
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2005 |
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IEEE Trans. Appl. Supercond. |
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15 |
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2 |
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960-963 |
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SIR |
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1051-8223 |
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517 |
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Koshelets, V. P.; Ermakov, A. B.; Filippenko, L. V.; Khudchenko, A. V.; Kiselev, O. S.; Sobolev, A. S.; Torgashin, M. Y.; Yagoubov, P. A.; Hoogeveen, R. W. M.; Wild, W. |
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Superconducting integrated submillimeter receiver for TELIS |
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2007 |
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IEEE Trans. Appl. Supercond. |
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17 |
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2 |
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336-342 |
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1051-8223 |
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524 |
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Torgashin, Mikhail Yu.; Koshelets, Valery P.; Dmitriev, Pavel N.; Ermakov, Andrey B.; Filippenko, Lyudmila V.; Yagoubov, Pavel A. |
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Superconducting Integrated Receiver Based on Nb-AlN-NbN-Nb Circuits |
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Journal Article |
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2007 |
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IEEE Trans. Appl. Supercond. |
Abbreviated Journal |
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17 |
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2 |
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379-382 |
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SIR |
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1051-8223 |
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525 |
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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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Terahertz superconducting hot electron bolometer heterodyne receivers |
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Journal Article |
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2007 |
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IEEE Trans. Appl. Supercond. |
Abbreviated Journal |
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17 |
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2 |
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252-258 |
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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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Yang, J. K. W.; Kerman, A. J.; Dauler, E. A.; Anant, V.; Rosfjord, K. M.; Berggren, K. K. |
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Modeling the electrical and thermal response of superconducting nanowire single-photon detectors |
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Journal Article |
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2007 |
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IEEE Trans. Appl. Supercond. |
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17 |
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2 |
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581 - 585 |
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SSPD, modeling |
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We modeled the response of superconducting nanowire single-photon detectors during a photodetection event, taking into consideration only the thermal and electrical properties of a superconducting NbN nanowire on a sapphire substrate. Our calculations suggest that heating which occurs after the formation of a photo-induced resistive barrier is responsible for the generation of a measurable voltage pulse. We compared this numerical result with experimental data of a voltage pulse from a slow device, i.e. large kinetic inductance, and obtained a good fit. Using this electro-thermal model, we estimated the temperature rise and the resistance buildup in the nanowire, and the return current at which the nanowire becomes superconducting again. We also show that the reset time of these photodetectors can be decreased by the addition of a series resistance and provide supporting experimental data. Finally we present preliminary results on a detector latching behavior that can also be explained using the electro-thermal model. |
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625 |
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Xiaolong Hu; Holzwarth, C.W.; Masciarelli, D.; Dauler, E.A.; Berggren, K.K. |
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Efficiently coupling light to superconducting nanowire single-photon detectors |
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Journal Article |
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2009 |
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IEEE Trans. Appl. Supercond. |
Abbreviated Journal |
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Volume |
19 |
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3 |
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336-340 |
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optical antennas; SNSPD |
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Abstract |
We designed superconducting nanowire single-photon detectors (SNSPDs) integrated with silver optical antennae for free-space coupling and a dielectric waveguide for fiber coupling. According to our finite-element simulation, (1) for the free-space coupling, the absorptance of the NbN nanowire for TM-polarized photons at the wavelength of 1550 nm can be as high as 96% by adding silver optical antennae; (2) for the fiber coupling, the absorptance of the NbN nanowire for TE-like-polarized photons can reach 76% including coupling efficiency at the wavelength of 1550 nm by adding a silicon nitride waveguide and an inverse-taper coupler. |
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RPLAB @ gujma @ |
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647 |
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