Entanglement Purification with Higher Error Threshold for Imperfection of Local Operations and Bell State Measurements

• 来源期刊: 中国物理快报（英文版）
• 年，卷（期）: 2005,（1）
• 页码范围: 15-17
• 页数: 3页
• 语种: 英文

摘要

We analyse further the entanglement purification protocol proposed by Feng et al. [Phys. Lett. A 271 (2000) 44] in the case of imperfect local operations and measurements. It is found that this protocol allows of higher error threshold. Compared with the standard entanglement purification proposed by Bennett et al. [Phys. Rev.Lett. 76 (1996) 722], it turns out that this protocol is remarkably robust against the influences of imperfect localoperations and measurements.