A QUANTUM SECURE DIRECT COMMUNICATION PROTOCOL for SENDING A QUANTUM STATE and ITS SECURITY ANALYSIS

摘要

These days, quantum secret communication algorithms different from quantum key distribution protocol have been proposed, which are called quantum secure direct communication protocols. These do not aim to have a key agreement between two communicators, but, to send a secret message directly using quantum devices. In this paper, we propose a new quantum secret direct communication protocol which has advantages over the current ones and also discuss its security analysis against the man-in-the-middle attack.