Quantum Walks of Correlated Photons

被引：726

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：

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

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

共 33 条

[1] QUANTUM RANDOM-WALKS
AHARONOV, Y
DAVIDOVICH, L
ZAGURY, N
[J]. PHYSICAL REVIEW A, 1993, 48 (02): : 1687 - 1690
[2] [Anonymous], 2003, STOC 03
[3] Optical Galton board
Bouwmeester, D
Marzoli, I
Karman, GP
Schleich, W
Woerdman, JP
[J]. PHYSICAL REVIEW A, 2000, 61 (01): : 9
[4] Quantum and Classical Correlations in Waveguide Lattices
Bromberg, Yaron
Lahini, Yoav
Morandotti, Roberto
Silberberg, Yaron
[J]. PHYSICAL REVIEW LETTERS, 2009, 102 (25)
[5] Spatial search by quantum walk
Childs, AM
Goldstone, J
[J]. PHYSICAL REVIEW A, 2004, 70 (02): : 022314 - 1
[6] On the Relationship Between Continuous- and Discrete-Time Quantum Walk
Childs, Andrew M.
[J]. COMMUNICATIONS IN MATHEMATICAL PHYSICS, 2010, 294 (02) : 581 - 603
[7] Universal Computation by Quantum Walk
Childs, Andrew M.
[J]. PHYSICAL REVIEW LETTERS, 2009, 102 (18)
[8] Experimental realization of a quantum qiaincunx by use of linear optical elements
Do, B
Stohler, ML
Balasubramanian, S
Elliott, DS
Eash, C
Fischbach, E
Fischbach, MA
Mills, A
Zwickl, B
[J]. JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS, 2005, 22 (02) : 499 - 504
[9] QUANTUM-MECHANICAL DESCRIPTION OF 2 COUPLED HARMONIC OSCILLATORS
ESTES, LE
KEIL, TH
NARDUCCI, LM
[J]. PHYSICAL REVIEW, 1968, 175 (01): : 286 - +
[10] Quantum computation and decision trees
Farhi, E
Gutmann, S
[J]. PHYSICAL REVIEW A, 1998, 58 (02): : 915 - 928

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