Implementation of a nonlocal N-qubit conditional phase gate by single-photon interference

被引：59

作者：

Deng, Z. J. ^{[1
,2
]}

Zhang, X. L. ^{[1
,2
]}

Wei, H. ^{[1
,2
]}

Gao, K. L. ^{[1
]}

Feng, M. ^{[1
]}

机构：

[1] Chinese Acad Sci, Wuhan Inst Phys & Math, State Key Lab Magnet Resonance & Atom & Mol Phys, Wuhan 430071, Peoples R China

[2] Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China

来源：

PHYSICAL REVIEW A | 2007年 / 76卷 / 04期

关键词：

D O I：

10.1103/PhysRevA.76.044305

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

By virtue of single-photon interference, we present how to realize a nonlocal N-qubit conditional phase gate, which might be quite useful for the synthesis of arbitrary entangled quantum states of remote qubits required by distributed quantum information processing. Without considering photon loss, our scheme would work in a repeat-until-success fashion with an automatic feedback line added. Even by taking photon loss into consideration, only the success probability is affected, not the gate fidelity.

引用

页数：4

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