| Records |
| Author |
Hu, Xiaolong; Dauler, Eric A.; Kerman, Andrew J.; Yang, Joel K. W.; White, James E.; Herder, Charles H.; Berggren, Karl K. |
| Title |
Using surface plasmons to enhance the speed and efficiency of superconducting nanowire single-photon detectors |
Type |
Conference Article |
| Year |
2009 |
Publication |
Proceedings of the Conference on Lasers and Electro-Optics, 2009 and 2009 Conference on Quantum electronics and Laser Science Conference |
Abbreviated Journal |
Proc of Conf. on Lasers and El.-Opt. |
| Volume |
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Issue |
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1-2 |
| Keywords |
optical antennas |
| Abstract |
We report our design and fabrication of superconducting nanowire single-photon detectors integrated with gold plasmonic nanostructures, which can enhance the absorption of TM-polarized light, and can enlarge the effective area without sacrificing detector speed. |
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no |
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RPLAB @ gujma @ |
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744 |
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Ovchinnikov, Yu. N.; Varlamov, A. A. |
| Title |
Fluctuation-dissipative phenomena in a narrow superconducting channel carrying current below critical |
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Journal Article |
| Year |
2009 |
Publication |
arXiv |
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| Volume |
0910.2659v1 |
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Pages |
1-4 |
| Keywords |
superconducting nanowire, resistance calculation |
| Abstract |
The theory of current transport in a narrow superconducting channel accounting for thermal fluctuations is developed. These fluctuations result in the appearance of small but finite dissipation in the sample. The value of corresponding voltage is found as the function of temperature (close to transition temperature) and arbitrary bias current. It is demonstrated that the value of the activation energy (exponential factor in the Arrenius law) when current approaches to the critical one is proportional to (1-J/Jc)^(5/4). This result is in concordance with the one for the affine phenomenon of the Josephson current decay due to the thermal phase fluctuations, where the activation energy proportional (1-J/J_c)^(3/2)(the difference in the exponents is related to the additional current dependence of the order parameter). Found dependence of the activation energy on current explains the enormous discrepancy between the theoretically predicted before and the experimentally observed broadening of the resistive transition. |
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arXiv:0910.2659v1; 4 pages, 3 figures |
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931 |
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Treuttel, J.; Thomas, B.; Maestrini, A.; Wang, H.; Alderman, B.; Siles, J.V.; Davis, S.; Narhi, T. |
| Title |
A 380 GHz sub-harmonic mixer using MMIC foundry based Schottky diodes transferred onto quartz substrate |
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Conference Article |
| Year |
2009 |
Publication |
Proc. 20th Int. Symp. Space Terahertz Technol. |
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Schottky |
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Charlottesville, Virginia, USA |
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no |
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586 |
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Минаева, Ольга Вячеславовна |
| Title |
Быстродействующий однофотонный детектор на основе тонкой сверхпроводниковой пленки NbN |
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Manuscript |
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2009 |
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М. МПГУ |
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SSPD |
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Ph.D. thesis |
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russian |
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585 |
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Doi, Y.; Wang, Z.; Ueda, T.; Nickels, P.; Komiyama, S.; Patrashin, M.; Hosako, I.; Matsuura, S.; Shirahata, M.; Sawayama, Y.; Kawada, M. |
| Title |
CSIP – a novel photon-counting detector applicable for the SPICA far-infrared instrument |
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Journal Article |
| Year |
2009 |
Publication |
SPICA |
Abbreviated Journal |
SPICA |
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SPICA Workshop 2009 |
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| Keywords |
detectors; Infrared |
| Abstract |
We describe a novel GaAs/AlGaAs double-quantumwell device for the infrared photon detection, called ChargeSensitive Infrared Phototransistor (CSIP). The principle of CSIP detector is the photo-excitation of an intersubband transition in a QW as an charge integrating gate and the signal ampli<ef><ac><81>cation by another QW as a channel with very high gain, which provides us with extremely high responsivity (104 – 106 A/W). It has been demonstrated that the CSIP designed for the mid-infrared wavelength (14.7 μm) has an excellent sensitivity; the noise equivalent power (NEP) of 7 × 10-19 W/ with the quantum effciency of ~ 2%. Advantages of the CSIP against the other highly sensitive detectors are, huge dynamic range of > 106, low output impedance of 103 – 104 Ohms, and relatively high operation temperature (> 2 K). We discuss possible applications of the CSIP to FIR photon detection covering 35 – 60 μm waveband, which is a gap uncovered with presently available photoconductors. |
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RPLAB @ gujma @ |
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672 |
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