论文标题
大型有效载荷双向量子安全直接通信而没有信息泄漏
Large payload bidirectional quantum secure direct communication without information leakage
论文作者
论文摘要
提出了一个大型有效载荷双向量子安全直接通信（BQSDC）协议，而没有信息泄漏，这是基于任何两个GHz州之间的纠缠交换。两个远程授权方，爱丽丝和鲍勃，可以安全地交换他们的个人秘密消息，而不必担心信息泄漏问题。我们的协议使用共享的秘密GHz状态克服信息泄漏问题。共享的秘密GHz国家在双向交流过程中扮演两个角色：一方面，它使鲍勃知道准备好的初始状态。另一方面，它用于编码鲍勃的秘密消息。此外，我们的协议可以每回合传输六个秘密消息。与以前的BQSDC协议相比，我们的协议的优点在于同时具有以下两个字符：一方面，它克服了信息泄漏问题；另一方面，它的容量高达每轮交流的六位。
A large payload bidirectional quantum secure direct communication (BQSDC) protocol without information leakage is proposed, which is based on entanglement swapping between any two GHZ states. Two remote authorized parties, Alice and Bob, can safely exchange their individual secret messages without worrying about the information leakage problem. Our protocol uses a shared secret GHZ state to overcome the information leakage problem. The shared secret GHZ state plays two roles in the bidirectional communication process: on one hand, it lets Bob know the prepared initial state; on the other hand, it is used for encoding Bob's secret messages. Moreover, our protocol can transmit six bits of secret messages per round communication. Compared with those previous BQSDC protocols, the advantage of our protocol lies in having the following two characters simultaneously: on one hand, it overcomes the information leakage problem; one the other hand, its capacity is as high as six bits per round communication.
