Tomographic test of Bell's inequality for a time-delocalized single photon

被引：32

作者：

D'Angelo, Milena

Zavatta, Alessandro

Parigi, Valentina

Bellini, Marco

机构：

[1] LENS, I-50019 Florence, Italy

[2] Ist Nazl Ott Applicata, I-50125 Florence, Italy

[3] Univ Florence, Dept Phys, I-50019 Florence, Italy

来源：

PHYSICAL REVIEW A | 2006年 / 74卷 / 05期

关键词：

D O I：

10.1103/PhysRevA.74.052114

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Time-domain balanced homodyne detection is performed on two well-separated temporal modes sharing a single photon. The reconstructed density matrix of the two-mode system is used to prove and quantify its entangled nature, while the Wigner function is employed for an innovative tomographic test of Bell's inequality based on the theoretical proposal by Banaszek and Wodkiewicz [Phys. Rev. Lett. 82, 2009 (1999)]. Provided some auxiliary assumptions are made, a clear violation of the Banaszek-Bell inequality is found.

引用

页数：6

共 48 条

[1] EXPERIMENTAL TEST OF BELL INEQUALITIES USING TIME-VARYING ANALYZERS [J].

ASPECT, A ;

DALIBARD, J ;

ROGER, G .

PHYSICAL REVIEW LETTERS, 1982, 49 (25) :1804-1807

[2] Homodyne tomography characterization and nonlocality of a dual-mode optical qubit [J].

Babichev, SA ;

Appel, J ;

Lvovsky, AI .

PHYSICAL REVIEW LETTERS, 2004, 92 (19) :193601-1

[3] Maximum-likelihood estimation of the density matrix [J].

Banaszek, K ;

D'Ariano, GM ;

Paris, MGA ;

Sacchi, MF .

PHYSICAL REVIEW A, 2000, 61 (01) :4

[4] Nonlocality of the Einstein-Podolsky-Rosen state in the Wigner representation [J].

Banaszek, K ;

Wódkiewicz, K .

PHYSICAL REVIEW A, 1998, 58 (06) :4345-4347

[5] Testing quantum nonlocality in phase space [J].

Banaszek, K ;

Wódkiewicz, K .

PHYSICAL REVIEW LETTERS, 1999, 82 (10) :2009-2013

[6]

Bell JS., 1964, PHYS PHYS FIZIKA, V1, P195, DOI [10.1103/Physics-PhysiqueFizika.1.195, 10.1103/PhysicsPhysiqueFizika.1.195, DOI 10.1103/PHYSICSPHYSIQUEFIZIKA.1.195]

[7] Quantum information and computation [J].