Concentration and purification scheme for two partially entangled photon pairs

被引：231

作者：

Yamamoto, T ^{[1
]}

Koashi, M ^{[1
]}

Imoto, N ^{[1
]}

机构：

[1] Grad Univ Adv Studies, Sch Adv Sci, CREST Res Team Interacting Carrier Elect, Kanagawa 2400193, Japan

来源：

PHYSICAL REVIEW A | 2001年 / 64卷 / 01期

关键词：

D O I：

10.1103/PhysRevA.64.012304

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

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.

引用

页数：8

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