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Controlled Secure Direct Communication by Using GHZ Entangled State

Yan Xia·Chang-Bao Fu·Feng-Yue Li·Shou Zhang·Kyu-Hwang Yeon·Chung-In Um
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Abstract

We present a controlled secure direct communication protocol by using Greenberger-Horne-Zeilinger (GHZ) entangled state via swapping quantum entanglement and local unitary operations. Since messages transferred only by using local operations and a public channel after entangled states are successfully distributed, this protocol can protect the communication against a destroying-travel-qubit-type attack. This scheme can also be generalized to a multi-party control system.

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Yan Xia, Chang-Bao Fu, Feng-Yue Li, Shou Zhang, Kyu-Hwang Yeon, Chung-In Um. 2006-01-21. Controlled Secure Direct Communication by Using GHZ Entangled State. https://arxiv.org/abs/quant-ph/0601145

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