摘要: |
提出了一种利用EPR对和纠缠交换的双向量子隐形传态;在这个协议中,双方可同时发送一个未知的单一量子比特给对方,而且在实际操作中比以前的提出的协议更加简单;利用提出的双向量子隐形传态,建立了一种新的双向量子安全直接通信协议,协议在通信过程中不需要传递携带秘密信息的量子比特,大大提高了量子通信的安全信. |
关键词: 纠缠交换 双向量子隐形传态 双向量子安全直接通信 |
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Bidirectional Quantum Secure Direct Communication Based onBidirectional Quantum Teleportation |
KONG Ling hao, HU Zhang ning
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Abstract: |
In this paper, a bidirectional quantum teleportation protocol based on Einstein Podolsky –Rosen(EPR) pairs and entanglement swapping is proposed. In this scheme, two users can simultaneously transmit an unknown single qubit state to each other, and the scheme is easier in actual operation compared with previous work. By utilizing this bidirectional quantum teleportation protocol, a bidirectional quantum secure direct communication scheme is presented and no qubits carrying secret messages are transmitted in a quantum channel which greatly improves security of quantum communication. |
Key words: entanglement swapping bidirectional quantum teleportation bidirectional quantum secure direct communication |