| Records |
| Author |
Hans Ekstrom; Karasik, Boris S.; Kollberg, Erik L.; Sigfrid Yngvesson |
| Title |
Conversion gain and noise of niobium superconducting hot–electron–mixers |
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Journal Article |
| 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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Karpov, A.; Blondel, J.; Voss, M.; Gundlach, K. H. |
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A three photon noise SIS heterodyne receiver at submillimeter wavelength |
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Journal Article |
| Year |
1999 |
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IEEE Trans. Appl. Supercond. |
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9 |
Issue |
2 |
Pages |
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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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 |
Pages |
832-835 |
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RPLAB @ s @ sis_Shitov_2001 |
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313 |
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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 |
| Year |
2007 |
Publication |
IEEE Trans. Appl. Supercond. |
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| Volume |
17 |
Issue |
2 |
Pages |
581 - 585 |
| Keywords |
SSPD, modeling |
| Abstract |
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. |
| Title |
Efficiently coupling light to superconducting nanowire single-photon detectors |
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Journal Article |
| Year |
2009 |
Publication |
IEEE Trans. Appl. Supercond. |
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19 |
Issue |
3 |
Pages |
336-340 |
| Keywords |
optical antennas; SNSPD |
| 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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