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Proceedings Paper

Improvement of QKD with practical photon-number resolving detectors
Author(s): Fangxing Xu; Zhengfu Han; Guangcan Guo
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Paper Abstract

We propose a scheme of BB84 quantum key distribution (QKD) with a triggered parametric down-conversion (PDC) source. According to different results of Alice's measurement using a photon number resolving (PNR) detector, we separate photon pulses into three sets to implement the passive decoy method. Performances of two different kinds of widely-used PNR detectors, TES and TMD, are investigated by simulation. With the parameters of PNR detectors nowadays, TES and TMD perform similarly. Both of them can improve the secure transmission distance up to 171 km. Furthermore, compared with the case using threshold detectors, this scheme can achieve a higher key generation rate.

Paper Details

Date Published: 23 February 2009
PDF: 7 pages
Proc. SPIE 7278, Photonics and Optoelectronics Meetings (POEM) 2008: Fiber Optic Communication and Sensors, 72780Y (23 February 2009); doi: 10.1117/12.821881
Show Author Affiliations
Fangxing Xu, Univ. of Science and Technology of China (China)
Zhengfu Han, Univ. of Science and Technology of China (China)
Guangcan Guo, Univ. of Science and Technology of China (China)


Published in SPIE Proceedings Vol. 7278:
Photonics and Optoelectronics Meetings (POEM) 2008: Fiber Optic Communication and Sensors
Dieter Stefan Jäger; Deming Liu; Ping Shum, Editor(s)

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