25 August 2005 Free-space quantum key distribution system with multi-photon quantum signal
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Abstract
We present a multi-photon scheme to improve the efficiency of free-space quantum key distribution system. Two essential features of free-space quantum key distribution system are its classical timing pulses and frequency tracking devices, we make use of these two features to design a new type of quantum key distribution system with multi-photon quantum signals and synchronously delayed classical signals. This scheme is much more efficient then the usual one, and in the same time, more secure since its synchronously randomizing of frequency and arriving time of quantum signals makes Eves have almost no opportunity to catch the quantum signals in time.
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Li Yang, Li Yang, Jiwu Jing, Jiwu Jing, } "Free-space quantum key distribution system with multi-photon quantum signal", Proc. SPIE 5893, Quantum Communications and Quantum Imaging III, 589306 (25 August 2005); doi: 10.1117/12.613455; https://doi.org/10.1117/12.613455
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