【摘要】 提出了一个利用一束单光子对话的方案。在方案中,利用两个不同的幺正操作对光子态进行编码,并且从一束光子中选择较大的子集进行窃听检查,该方案能够有效地抵御截取再发送袭击。此外,由于利用单光子没有利用EPR对,因此该方案是很实际的。该方案是绝对安全的。更多还原

【Abstract】 We propose a quantum dialogue scheme using a batch of single photons.In the scheme,we encode the states of the single photons with the secret message by two different unitary operations,and select randomly a sufficiently large subset of photons from the batch to check eavesdropping,so,our scheme can resist the intercept-and-resend attack efficiently.In addition,our scheme is practical because it uses usingle photons instead of EPR pairs.The conclusion shows that the scheme is unconditionally secure.更多还原