Experimental nonlinear sign shift for linear optics quantum computation

被引：70

作者：

Sanaka, K

Jennewein, T

Pan, JW

Resch, K

Zeilinger, A

机构：

[1] Univ Vienna, Inst Expt Phys, A-1090 Vienna, Austria

[2] Austrian Acad Sci, Inst Quantenopt & Quanteninformat, A-1090 Vienna, Austria

来源：

PHYSICAL REVIEW LETTERS | 2004年 / 92卷 / 01期

关键词：

D O I：

10.1103/PhysRevLett.92.017902

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have realized the nonlinear sign shift operation for photonic qubits. This operation shifts the phase of two photons reflected by a beam splitter using an extra single photon and measurement. We show that the conditional phase shift is (1.05+/-0.06)pi in clear agreement with theory. Our results show that, by using an ancilla photon and conditional detection, nonlinear optical effects can be implemented using only linear optical elements. This experiment represents an essential step for linear optical implementations of scalable quantum computation.

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页数：4

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共 26 条

[1] ELEMENTARY GATES FOR QUANTUM COMPUTATION [J].

BARENCO, A ;

BENNETT, CH ;

CLEVE, R ;

DIVINCENZO, DP ;

MARGOLUS, N ;

SHOR, P ;

SLEATOR, T ;

SMOLIN, JA ;

WEINFURTER, H .

PHYSICAL REVIEW A, 1995, 52 (05) :3457-3467

[2] Experimental quantum teleportation [J].

Bouwmeester, D ;

Pan, JW ;

Mattle, K ;

Eibl, M ;

Weinfurter, H ;

Zeilinger, A .

NATURE, 1997, 390 (6660) :575-579

[3] SIMPLE QUANTUM COMPUTER [J].

CHUANG, IL ;

YAMAMOTO, Y .

PHYSICAL REVIEW A, 1995, 52 (05) :3489-3496

[4] Demonstrating the viability of universal quantum computation using teleportation and single-qubit operations [J].

Gottesman, D ;

Chuang, IL .

NATURE, 1999, 402 (6760) :390-393

[5] Quantum phase gate for photonic qubits using only beam splitters and postselection [J].

Hofmann, HF ;

Takeuchi, S .

PHYSICAL REVIEW A, 2002, 66 (02) :3

[6] Quantum filter for nonlocal polarization properties of photonic qubits [J].

Hofmann, HF ;

Takeuchi, S .

PHYSICAL REVIEW LETTERS, 2002, 88 (14) :4

[7] MEASUREMENT OF SUBPICOSECOND TIME INTERVALS BETWEEN 2 PHOTONS BY INTERFERENCE [J].

HONG, CK ;

OU, ZY ;

MANDEL, L .

PHYSICAL REVIEW LETTERS, 1987, 59 (18) :2044-2046

[8] Experimental nonlocality proof of quantum teleportation and entanglement swapping [J].

Jennewein, T ;

Weihs, G ;

Pan, JW ;

Zeilinger, A .

PHYSICAL REVIEW LETTERS, 2002, 88 (01) :4-179034

[9] Multiphoton detection using visible light photon counter [J].

Kim, JS ;

Takeuchi, S ;

Yamamoto, Y ;

Hogue, HH .

APPLIED PHYSICS LETTERS, 1999, 74 (07) :902-904

[10] A scheme for efficient quantum computation with linear optics [J].

Knill, E ;

Laflamme, R ;

Milburn, GJ .

NATURE, 2001, 409 (6816) :46-52