Demonstration of a simple entangling optical gate and its use in Bell-state analysis

被引：215

作者：

Langford, NK ^{[1
]}

Weinhold, TJ

Prevedel, R

Resch, KJ

Gilchrist, A

O'Brien, JL

Pryde, GJ

White, AG

机构：

[1] Univ Queensland, Ctr Quantum Comp Technol, Brisbane, Qld 4072, Australia

[2] Univ Queensland, Dept Phys, Brisbane, Qld 4072, Australia

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

来源：

PHYSICAL REVIEW LETTERS | 2005年 / 95卷 / 21期

关键词：

D O I：

10.1103/PhysRevLett.95.210504

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We demonstrate a new architecture for an optical entangling gate that is significantly simpler than previous realizations, using partially polarizing beam splitters so that only a single optical mode-matching condition is required. We demonstrate operation of a controlled-z gate in both continuous-wave and pulsed regimes of operation, fully characterizing it in each case using quantum process tomography. We also demonstrate a fully resolving, nondeterministic optical Bell-state analyzer based on this controlled-z gate. This new architecture is ideally suited to guided optics implementations of optical gates.

引用

页数：4

共 23 条

[11] Optical quantum computation using cluster states [J].

Nielsen, MA .

PHYSICAL REVIEW LETTERS, 2004, 93 (04) :040503-1

[12]

Nielsen Michael A, 2002, Quantum computation and quantum information, DOI DOI 10.1119/1.1463744

[13] Quantum process tomography of a controlled-NOT gate [J].

O'Brien, JL ;

Pryde, GJ ;

Gilchrist, A ;

James, DFV ;

Langford, NK ;

Ralph, TC ;

White, AG .

PHYSICAL REVIEW LETTERS, 2004, 93 (08) :080502-1

[14] Demonstration of an all-optical quantum controlled-NOT gate [J].

O'Brien, JL ;

Pryde, GJ ;

White, AG ;

Ralph, TC ;

Branning, D .

NATURE, 2003, 426 (6964) :264-267

[15] Experimental controlled-NOT logic gate for single photons in the coincidence basis [J].

Pittman, TB ;

Fitch, MJ ;

Jacobs, BC ;

Franson, JD .

PHYSICAL REVIEW A, 2003, 68 (03) :4

[16] Violation of Bell's inequality with photons from independent sources [J].

Pittman, TB ;

Franson, JD .

PHYSICAL REVIEW LETTERS, 2003, 90 (24) :4

[17] Demonstration of nondeterministic quantum logic operations using linear optical elements [J].

Pittman, TB ;

Jacobs, BC ;

Franson, JD .

PHYSICAL REVIEW LETTERS, 2002, 88 (25) :4

[18] Linear optical controlled-NOT gate in the coincidence basis [J].

Ralph, TC ;

Langford, NK ;

Bell, TB ;

White, AG .

PHYSICAL REVIEW A, 2002, 65 (06) :5

[19] Simple scheme for efficient linear optics quantum gates [J].

Ralph, TC ;

White, AG ;

Munro, WJ ;

Milburn, GJ .

PHYSICAL REVIEW A, 2002, 65 (01) :6

[20] Quantum dense coding with atomic qubits [J].

Schaetz, T ;

Barrett, MD ;

Leibfried, D ;

Chiaverini, J ;

Britton, J ;

Itano, WM ;

Jost, JD ;

Langer, C ;

Wineland, DJ .

PHYSICAL REVIEW LETTERS, 2004, 93 (04) :040505-1

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