Abstract In this paper a quantum dialogue scheme is proposed by using N batches of single photons. The same secret message is encoded on each batch of single photons by the sender with two different unitary operations, and then the N batches of single photons are sent to the receiver. After eavesdropping check, the message is encoded on the one remaining batch by the receiver. It is shown that the intercept-and-resend attack and coupling auxiliary modes attack can be resisted more efficiently, because the photons are sent only once in our quantum dialogue scheme.
Received: 05 January 2006
Revised: 09 February 2006
Accepted manuscript online:
PACS:
03.65.-w
(Quantum mechanics)
Fund: Project supported by the Science Foundation of Yanbian University of China (Grant No 2005-20).
Cite this article:
Ji Xin (计新), Zhang Shou (张寿) Secure quantum dialogue based on single-photon 2006 Chinese Physics 15 1418
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