ACTA PHOTONICA SINICA

Controlled Quantum Secure Direct Communication by Using Five-particle Cluster States

Nie Yi-yo

Published Jan 1, 2014• 0 citations

Abstract

A novel controlled quantum secure direct communication scheme by using five-particle cluster states is proposed.In this scheme,the quantum channel between the sender Alice,the controller Charlie and the receiver Bob consists of an ordered sequence of five-particle cluster states which are prepared by Alice.After determine the security of quantum channel,Alice prepares the encoded Bell-state sequences,and Alice and Bob perform Bell-state measurements on the particles at hand,respectively,and then Charlie may make a single-particle measurement.Then Alice and Charlie tell their result to Bob,Bob can get the secret information through the analysis of their results.In our scheme,the information-carrying particles do not need to be transmitted over the public channel.Moreover,we analyze the security of the controlled quantum secure direct communication protocol,and demonstrate that our scheme is determinate and secure.In the future,our scheme might be realizable based on present experimental technology.

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