An efficient deterministic secure quantum communication scheme based on cluster states and identity authentication

• 来源期刊: 中国物理B（英文版）
• 关键词: deterministic secure quantum communication cluster state identity authentication
• 年，卷（期）: 2009,（10）
• 页码范围: 4105-4109
• 页数: 5页
• 语种: 英文

摘要

A novel efficient deterministic secure quantum communication scheme based on four-qubit cluster states and single-photon identity authentication is proposed. In this scheme, the two authenticated users can transmit two bits of classical information per cluster state, and its efficiency of the quantum communication is 1/3, which is approximately 1.67 times that of the previous protocol presented by Wang et al [Chin. Phys. Lett. 23 (2006) 2658]. Security analysis shows the present scheme is secure against intercept-resend attack and the impersonator's attack. Furthermore, it is more economic with present-day techniques and easily processed by a one-way quantum computer.