中国物理B ›› 2007, Vol. 16 ›› Issue (7): 1868-1877.doi: 10.1088/1009-1963/16/7/011

• GENERAL • 上一篇    下一篇

Quantum broadcast communication

王剑, 张权, 唐朝京   

  1. School of Electronic Science and Engineering, National University of Defense Technology, Changsha 410073, China
  • 收稿日期:2006-08-23 修回日期:2006-12-08 出版日期:2007-07-04 发布日期:2007-07-04
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No 60472032).

Quantum broadcast communication

Wang Jian(王剑)†, Zhang Quan(张权), and Tang Chao-Jing(唐朝京)   

  1. School of Electronic Science and Engineering, National University of Defense Technology, Changsha 410073, China
  • Received:2006-08-23 Revised:2006-12-08 Online:2007-07-04 Published:2007-07-04
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No 60472032).

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摘要： Broadcast encryption allows the sender to securely distribute his/her secret to a dynamically changing group of users over a broadcast channel. In this paper, we just take account of a simple broadcast communication task in quantum scenario, in which the central party broadcasts his secret to multi-receiver via quantum channel. We present three quantum broadcast communication schemes. The first scheme utilizes entanglement swapping and Greenberger--Horne--Zeilinger state to fulfil a task that the central party broadcasts the secret to a group of receivers who share a group key with him. In the second scheme, based on dense coding, the central party broadcasts the secret to multi-receiver, each of which shares an authentication key with him. The third scheme is a quantum broadcast communication scheme with quantum encryption, in which the central party can broadcast the secret to any subset of the legal receivers.

Abstract: Broadcast encryption allows the sender to securely distribute his/her secret to a dynamically changing group of users over a broadcast channel. In this paper, we just take account of a simple broadcast communication task in quantum scenario, in which the central party broadcasts his secret to multi-receiver via quantum channel. We present three quantum broadcast communication schemes. The first scheme utilizes entanglement swapping and Greenberger--Horne--Zeilinger state to fulfil a task that the central party broadcasts the secret to a group of receivers who share a group key with him. In the second scheme, based on dense coding, the central party broadcasts the secret to multi-receiver, each of which shares an authentication key with him. The third scheme is a quantum broadcast communication scheme with quantum encryption, in which the central party can broadcast the secret to any subset of the legal receivers.

Key words: quantum broadcast communication, quantum secure direct communication

中图分类号:  (Quantum communication)

  • 03.67.Hk
03.65.Ud (Entanglement and quantum nonlocality) 03.67.Dd (Quantum cryptography and communication security) 03.67.Mn (Entanglement measures, witnesses, and other characterizations) 84.40.Ua (Telecommunications: signal transmission and processing; communication satellites)