Journal of Beijing University of Posts and Telecommunications

  • EI核心期刊

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2006, Vol. 29 ›› Issue (3): 40-43.doi: 10.13190/jbupt.200603.40.007

• Papers • Previous Articles     Next Articles

Quantum Key Distribution and Secret Sharing via W states

YANG Yu-guang1 WEN Qiao-yan1 ZHU Fu-chen2   

  1. 1.Science School, Beijing University of Posts and Telecommunications, Beijing 100876,China;
    2. National Laboratory for Modern Communications, Chengdu 610041,China;
  • Received:2004-08-10 Revised:1900-01-01 Online:2006-06-30 Published:2006-06-30
  • Contact: YANG Yu-guang

Abstract:

The characteristic of W state is introduced. The coefficients of W state used for quantum key distribution and secret sharing are proved to be uniform in symmetrical form. The corresponding quantum key distribution scheme via W state is proposed. To insure the security of the proposed quantum key distribution protocol, the receiver chooses randomly the message mode or control mode asymmetrically. And the security of the schemes is discussed. Quantum secret sharing scheme is accordingly proposed. And the security of the schemes is also discussed. Compared with the quantum key distribution and secret sharing schemes with Greenberger-Horne-Zeilinger(GHZ) states, the efficiency of the proposed schemes is low. The purpose of this paper is just to prove that the states except for GHZ states can be used for quantum key distribution and secret sharing.

Key words: Quantum Key Distribution, Quantum Secret Sharing, W state

CLC Number: