Secure quantum dialogue based on single-photon

• 来源期刊: 中国物理（英文版）
• 关键词: quantum dialogue single photon unitary operation
• 年，卷（期）: 2006,（7）
• 页码范围: 1418-1420
• 页数: 3页
• 语种: 英文

摘要

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.