Yuan LI^*, Guihua ZENG, Weili YAO¹, and Moonho LEE²

Laboratory of Coding and Communication Security, Department of Electronic Engineering, Shanghai Jiaotong University, Shanghai 200240, China
¹Department of Mathematics, Shanghai University, Shanghai 200444, China
²Institute of Information and Communication, Department of Information and Communication Engineering, Chonbuk National University, Chonju 561-756, Korea

(Received September 16, 2008; Accepted March 19, 2009)

In this paper, we proposed a novel quantum secure direct communication scheme with one-time pad in stabilizer formalism. Based on the reuse of qubit sequence, an efficient secure communication of secret messages without first producing a shared secret key can be achieved. One hence may find that the amount of private key needed for quantum communication is smaller than that in the general case. Therefore, the present protocol which is feasible with the present-day techniques may be applied to quantum communication with short-length encoding.

Key words: quantum secure direct communication, quantum stabilizer codes, one-time pad, security analysis

^*E-mail address: ccsliyuan@yahoo.com.cn.