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arXiv quant-ph/0312004quant-ph
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使用GHZ状态和隐形传态的受控和安全的直接通信

Controlled and secure direct communication using GHZ state and teleportation

Ting Gao

摘要:

本文提出了一种可控的、安全的直接通信的理论方案。通信是基于GHZ态和受控量子隐形传态。在确保量子信道(GHZ态的一组量子比特)的安全性之后,Alice将秘密信息直接编码在一系列粒子态上,并使用受控的量子隐形传态将它们传输给由Charlie监督的Bob。Bob可以通过测量他的量子位直接读出编码的信息。在该方案中,受控的量子隐形传态传输Alice的信息而不向潜在的窃听者透露任何信息。由于Alice和Bob之间不存在量子比特在公共信道中的传输,因此如果使用理想的量子信道,则对于受控的直接秘密通信是完全安全的。该方案的特点是双方的通信依赖于第三方的同意。

英文摘要:

A theoretical scheme for controlled and secure direct communication is proposed. The communication is based on GHZ state and controlled quantum teleportation. After insuring the security of the quantum channel (a set of qubits in the GHZ state), Alice encodes the secret message directly on a sequence of particle states and transmits them to Bob supervised by Charlie using controlled quantum teleportation. Bob can read out the encoded messages directly by the measurement on his qubits. In this scheme, the controlled quantum teleportation transmits Alice's message without revealing any information to a potential eavesdropper. Because there is not a transmission of the qubit carrying the secret messages between Alice and Bob in the public channel, it is completely secure for controlled and direct secret communication if perfect quantum channel is used. The feature of this scheme is that the communication between two sides depends on the agreement of the third side.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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