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Proceedings Paper

Plug and Play quantum key distribution system using differential phase shift
Author(s): Xiuliang Chen; Chunyuan Zhou; Guang Wu; Xianghe Li; Heping Zeng
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Paper Abstract

This report proposes a “Plug and Play” quantum key distribution system using differential phase shift, in which any birefringence effects and polarization-dependent losses in the telecom fiber are automatically compensated by using a Faraday mirror. In this system, a light pulse is split into three pulses after traveling through four couplers and a light intensity feedback servosystem is plugged into this system in order to adjust the phase shifter to compensate the variation of these three pulses. The efficiency of key creation in this system is 8/3 higher than the conventional cryptosystem based on the BB84 protocol.

Paper Details

Date Published: 7 May 2004
PDF: 6 pages
Proc. SPIE 5281, Optical Transmission, Switching, and Subsystems, (7 May 2004); doi: 10.1117/12.520250
Show Author Affiliations
Xiuliang Chen, East China Normal Univ. (China)
Chunyuan Zhou, East China Normal Univ. (China)
Guang Wu, East China Normal Univ. (China)
Xianghe Li, East China Normal Univ. (China)
Heping Zeng, East China Normal Univ. (China)
Univ. of Sydney (Australia)

Published in SPIE Proceedings Vol. 5281:
Optical Transmission, Switching, and Subsystems
Cedric F. Lam; Chongcheng Fan; Norbert Hanik; Kimio Oguchi, Editor(s)

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