A scheme for secure direct communication using EPR pairs and teleportation
A scheme for secure direct communication using EPR pairs and teleportation
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DOI：
10.1140/epjb/e2004-00296-4
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发表时间：
2003-11
期刊：
影响因子：
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通讯作者：
Fengli Yan;Xiaoqiang Zhang
中科院分区：
文献类型：
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作者：
Fengli Yan;Xiaoqiang Zhang
提出了一种在Alice和Bob之间进行安全直接通信的新方案，该方案不需要建立共享密钥。这种通信是基于爱因斯坦-波斯基-罗森对以及爱丽丝和鲍勃之间的隐形传态。在确保量子信道(EPR对)的安全性后，Bob将秘密信息直接编码在一系列粒子态上，并通过隐形传态将其传输给Alice。在该方案中，隐形传态在不向潜在窃听者透露任何信息的情况下传输Bob的消息。Alice可以通过她的量子比特上的测量直接读出编码的消息。由于在Alice和Bob之间不存在携带秘密信息的量子比特的传输，因此如果使用完美的量子信道，直接秘密通信是完全安全的。
A novel scheme for secure direct communication between Alice and Bob is proposed, where there is no need for establishing a shared secret key. The communication is based on Einstein-Podolsky-Rosen pairs and teleportation between Alice and Bob. After insuring the security of the quantum channel (EPR pairs), Bob encodes the secret message directly on a sequence of particle states and transmits them to Alice by teleportation. In this scheme teleportation transmits Bob's message without revealing any information to a potential eavesdropper. Alice can read out the encoded messages directly by the measurement on her qubits. Because there is not a transmission of the qubit which carry the secret message between Alice and Bob, it is completely secure for direct secret communication if perfect quantum channel is used.