Scheme for purifying a general mixed entangled state and its linear optical implementation

• 作者: 张延磊 董冬 邹旭波 邹长铃 郭光灿
• 来源期刊: 中国物理B（英文版）
• 关键词: entanglement purifying optical implementation
• 年，卷（期）: 2015,（10）
• 页码范围: 100306-1-100306-4
• 页数: 1页
• 语种: 英文
• DOI: 10.1088/1674-1056/24/10/100306

摘要

We propose a scheme for purification of a general mixed entangled state. In this scheme, we start from a large number of general mixed entangled states and end up, after local operation and classical communication, with a smaller number of Bell diagonal states with higher entanglement. In particular, the scheme can purify one maximally entangled state from two entangled pairs prepared in a class of mixed entangled state. Furthermore we propose a linear optical implementation of the present scheme with polarization beam splitters and photon detectors.