Scheme for implementing linear optical quantum iSWAP gate with conventional photon detectors

被引：26

作者：

Wang, Hong-Fu ^{[1
,2
]}

Shao, Xiao-Qiang ^{[1
]}

Zhao, Yong-Fang ^{[1
]}

Zhang, Shou ^{[1
,2
]}

Yeon, Kyu-Hwang ^{[3
,4
]}

机构：

[1] Harbin Inst Technol, Dept Phys, Ctr Condensed Matter Sci & Technol, Harbin 150001, Peoples R China

[2] Yanbian Univ, Dept Phys, Coll Sci, Yanji 133002, Jilin, Peoples R China

[3] Chungbuk Natl Univ, Coll Nat Sci, Program Phys BK21, Cheonju 361763, Chungbuk, South Korea

[4] Chungbuk Natl Univ, Coll Nat Sci, Dept Phys, Cheonju 361763, Chungbuk, South Korea

来源：

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS | 2010年 / 27卷 / 01期

基金：

中国国家自然科学基金;

关键词：

GENERATION; STATES; DOT;

D O I：

10.1364/JOSAB.27.000027

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A simple scheme is proposed to implement a two-qubit linear optical quantum iSWAP gate that is a universal gate in quantum computation and quantum information processing. By the interference effect of the polarized photons, a quantum iSWAP gate can be achieved with a low success probability (eta(4)/32, with eta being the quantum efficiency of photon detectors). The scheme is based only on simple linear optical elements, a pair of two-photon polarization entangled states, and conventional photon detectors that only distinguish the vacuum and nonvacuum Fock number states, which greatly decreases the experimental difficulty of implementing linear optical quantum computation. (C) 2009 Optical Society of America

引用

页码：27 / 31

页数：5

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