Concentration and purification scheme for two partially entangled photon pairs 论文

详细信息

发表期刊/会议

Physical Review A

发表日期

2001-06-04

发表年份

2001

摘要

An experimental scheme for concentrating entanglement in partially entangled photon pairs is proposed. In this scheme, two separated parties obtain one maximally entangled photon pair from two previously shared partially entangled photon pairs by local operations and classical communication. A practical realization of the proposed scheme is discussed, which uses imperfect photon detectors and spontaneous parametric down-conversion as a photon source. This scheme also works for purifying a class of mixed states.