Cai-Li Communication Protocol in Noisy Quantum Channel

• 来源期刊: 中国物理快报（英文版）
• 年，卷（期）: 2004,（12）
• 页码范围: 2340-2342
• 页数: 3页
• 语种: 英文

摘要

Since the original Cai-Li protocol [Chin. Phys. Lett. 21 (2004) 601] can be used only in an ideal quantum communication, we present the modified Cai-Li protocol that can be used in the a noisy quantum channel by using Calderbank-Shor-Steane (CSS) codes to correct errors. We also give a tight bound on the connection between information Eve eavesdropped with a measurement attack in line B → A and detection probability,which shows that the Cai-Li protocol can be used as a quasisecure direct quantum communication.