中文摘要：

提出了一个建立在EPR关联之上的量子密钥分配协议．通信双方通过交换量子位和贝、尔测量建立起共享的密钥，没有第三方可以窃取密钥而不被发现，因此该协议是安全的：该协议也是高效的，除了少数用作检错的量子位之外，所有的量子位都对密钥有贡献。

英文摘要：

This paper provides a quantum key distribution protocol based on the correlations of Einstein- Podolslcy-Rosen （EPR） pairs. The two parties establish the key by exchanging qubits and performing the Bell state measurement. This protocol is proved to be secure because that no other people can get the key without being found. All qubits distribute to the key except those for error-checking. So the protocol is efficient.