Controlled Secure Direct Communication by Using GHZ Entangled State

Details Controlled Secure Direct Communication by Using GHZ Entangled State Controlled Secure Direct Communication by Using GHZ Entangled State

2006-01-21

arxiv.org/abs/quant-ph/0601145v1

Journal of the Korean Physical Society, 47, 5(2005)753

Physics

Quantum Physics

Scientific paper

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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