Quantum Walks of Correlated Photons

被引：724

作者：

Peruzzo, Alberto ^{[1
,2
]}

Lobino, Mirko ^{[1
,2
]}

Matthews, Jonathan C. F. ^{[1
,2
]}

Matsuda, Nobuyuki ^{[3
]}

Politi, Alberto ^{[1
,2
]}

Poulios, Konstantinos ^{[1
,2
]}

Zhou, Xiao-Qi ^{[1
,2
]}

Lahini, Yoav ^{[4
]}

Ismail, Nur ^{[5
]}

Worhoff, Kerstin ^{[5
]}

Bromberg, Yaron ^{[4
]}

Silberberg, Yaron ^{[4
]}

Thompson, Mark G. ^{[1
,2
]}

O'Brien, Jeremy L. ^{[1
,2
]}

机构：

[1] Univ Bristol, HH Wills Phys Lab, Ctr Quantum Photon, Bristol BS8 1UB, Avon, England

[2] Univ Bristol, Dept Elect & Elect Engn, Bristol BS8 1UB, Avon, England

[3] Tohoku Univ, Res Inst Elect Commun, Sendai, Miyagi 9808577, Japan

[4] Weizmann Inst Sci, Dept Phys Complex Syst, IL-76100 Rehovot, Israel

[5] Univ Twente, MESA Inst Nanotechnol, Integrated Opt Microsyst Grp, NL-7500 AE Enschede, Netherlands

来源：

SCIENCE | 2010年 / 329卷 / 5998期

基金：

日本学术振兴会; 英国工程与自然科学研究理事会; 美国国家科学基金会; 欧洲研究理事会;

关键词：

EXPERIMENTAL REALIZATION;

D O I：

10.1126/science.1193515

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Quantum walks of correlated particles offer the possibility of studying large-scale quantum interference; simulating biological, chemical, and physical systems; and providing a route to universal quantum computation. We have demonstrated quantum walks of two identical photons in an array of 21 continuously evanescently coupled waveguides in a SiOxNy chip. We observed quantum correlations, violating a classical limit by 76 standard deviations, and found that the correlations depended critically on the input state of the quantum walk. These results present a powerful approach to achieving quantum walks with correlated particles to encode information in an exponentially larger state space.

引用

页码：1500 / 1503

页数：4

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