Angular Two-Photon Interference and Angular Two-Qubit States

被引：47

作者：

Jha, Anand Kumar ^{[1
]}

Leach, Jonathan ^{[2
]}

Jack, Barry ^{[2
]}

Franke-Arnold, Sonja ^{[2
]}

Barnett, Stephen M. ^{[3
]}

Boyd, Robert W. ^{[1
]}

Padgett, Miles J. ^{[2
]}

机构：

[1] Univ Rochester, Inst Opt, Rochester, NY 14627 USA

[2] Univ Glasgow, Dept Phys & Astron, SUPA, Glasgow, Lanark, Scotland

[3] Univ Strathclyde, Dept Phys, SUPA, Glasgow, Lanark, Scotland

来源：

PHYSICAL REVIEW LETTERS | 2010年 / 104卷 / 01期

基金：

英国工程与自然科学研究理事会;

关键词：

BELL INEQUALITY; MOMENTUM; VIOLATION; PHOTONS; COMMUNICATION; ENTANGLEMENT; LIGHT;

D O I：

10.1103/PhysRevLett.104.010501

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Using angular-position-orbital-angular-momentum entangled photons, we study angular two-photon interference in a scheme in which entangled photons are made to pass through apertures in the form of double angular slits, and using this scheme, we demonstrate an entangled two-qubit state that is based on the angular-position correlations of entangled photons. The entanglement of the two-qubit state is quantified in terms of concurrence. These results provide an additional means for preparing entangled quantum states for use in quantum information protocols.

引用

页数：4

共 34 条

[1] EXPERIMENTAL REALIZATION OF EINSTEIN-PODOLSKY-ROSEN-BOHM GEDANKENEXPERIMENT - A NEW VIOLATION OF BELL INEQUALITIES [J].