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Seki, T.; Shibata, H.; Takesue, H.; Tokura, Y.; Imoto, N. |
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Comparison of timing jitter between NbN superconducting single-photon detector and avalanche photodiode |
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Journal Article |
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2010 |
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Phys. C |
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Phys. C |
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470 |
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20 |
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1534-1537 |
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SSPD; APD; jitter |
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Abstract |
We report the pulse-to-pulse timing jitter measurement of a niobium nitride (NbN) superconducting single-photon detector (SSPD) and an InGaAs avalanche photodiode (APD) at 1550-nm wavelength. A direct comparison of their timing jitter was performed by using the same experimental configuration to measure both detectors. The measured jitter of the SSPD and the APD are 75 and 84 ps at full-width at half-maximum (FWHM), and 138 and 384 ps at full-width at tenth-maximum (FWTM), respectively. The jitter of the SSPD remains small at FWTM while that of APD is wide. We also estimated the transmission distances and secure key generation rates for fiber-based quantum key distribution (QKD) which uses these detectors. The estimated transmission distances of the APD are 86 km and 107 km with respect to 1 ns and 100 ps time windows, respectively, and those of the SSPD are 125 km and 172 km with respect to 1 ns and 100 ps time windows, respectively. This estimation indicates the SSPDЃfs advantages for QKD compared to the APD. |
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RPLAB @ akorneev @ |
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613 |
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Parvitte, B.; Thomas, X.; Courtois, D. |
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Wide band (2.5 GHz) infrared heterodyne spectrometer |
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1995 |
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Int. J. Infrared and Millimeter Waves |
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16 |
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9 |
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1533-1540 |
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HgCdTe detector mixer |
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0195-9271 |
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470 |
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Van Rudd, J.; Johnson, Jon L.; Mittleman, Daniel M. |
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Cross-polarized angular emission patterns from lens-coupled terahertz antennas |
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2001 |
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J. Opt. Soc. Am. B |
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18 |
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10 |
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1524 |
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0740-3224 |
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475 |
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Burke, P. J.; Schoelkopf, R. J.; Prober, D. E.; Skalare, A.; Karasik, B. S.; Gaidis, M. C.; McGrath, W. R.; Bumble, B.; Leduc, H. G. |
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Spectrum of thermal fluctuation noise in diffusion and phonon cooled hot-electron mixers |
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1998 |
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Applied Physics Letters |
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Appl. Phys. Lett. |
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72 |
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12 |
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1516-1518 |
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HEB mixer; thermal fluctuation noise; TFN |
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A systematic study of the intermediate frequency noise bandwidth of Nb thin-film superconducting hot-electron bolometers is presented. We have measured the spectrum of the output noise as well as the conversion efficiency over a very broad intermediate frequency range (from 0.1 to 7.5 GHz) for devices varying in length from 0.08 μm to 3 μm. Local oscillator and rf signals from 8 to 40 GHz were used. For a device of a given length, the spectrum of the output noise and the conversion efficiency behave similarly for intermediate frequencies less than the gain bandwidth, in accordance with a simple thermal model for both the mixing and thermal fluctuation noise. For higher intermediate frequencies the conversion efficiency decreases; in contrast, the noise decreases but has a second contribution which dominates at higher frequency. The noise bandwidth is larger than the gain bandwidth, and the mixer noise is low, between 120 and 530 K (double side band). |
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RPLAB @ gujma @ |
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760 |
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Zwiller, V.; Aichele, T.; Seifert, W.; Persson, J.; Benson, O. |
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Generating visible single photons on demand with single InP quantum dots |
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2003 |
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Applied Physics Letters |
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Appl. Phys. Lett. |
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82 |
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10 |
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1509-1511 |
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single photon, quantum dot, InP |
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0003-6951 |
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503 |
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