%0 Journal Article
%T Quantum broadcast communication
%A Wang Jian
%A Zhang Quan
%A Tang Chao-Jing
%A <br>王剑
%A 张权
%A 唐朝京
%J 中国物理 B
%D 2007
%I 
%X 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.
%K quantum broadcast communication
%K quantum secure direct communication<br>量子
%K 广播通讯
%K 信息传达
%K 物理
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=CD8D6A6897B9334F09D8D1648C376FB4&aid=51EC29F0F1FE47960B3F7FCA1A186FF6&yid=A732AF04DDA03BB3&vid=7801E6FC5AE9020C&iid=DF92D298D3FF1E6E&sid=945A0D4267ABB31D&eid=5EA913D6CA639CC0&journal_id=1009-1963&journal_name=中国物理&referenced_num=0&reference_num=36