TY  - JOUR
AU  - Seki, T.
AU  - Shibata, H.
AU  - Takesue, H.
AU  - Tokura, Y.
AU  - Imoto, N.
PY  - 2010
DA  - 2010//
TI  - Comparison of timing jitter between NbN superconducting single-photon detector and avalanche photodiode
T2  - Phys. C
JO  - Phys. C
SP  - 1534
EP  - 1537
VL  - 470
IS  - 20
KW  - SSPD
KW  - APD
KW  - jitter
AB  - 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.
UR  - https://doi.org/10.1016/j.physc.2010.05.156
DO  - 10.1016/j.physc.2010.05.156
N1  - exported from refbase (https://db.rplab.ru/refbase/show.php?record=613), last updated on Mon, 24 May 2021 14:29:37 -0500
ID  - Seki_etal2010
ER  -