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

Journal Article · Wed Nov 15 00:00:00 EST 2006 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.74.052114· OSTI ID:20979321

D'Angelo, Milena ^[1]; Zavatta, Alessandro ^[2]; Parigi, Valentina ^[1]; Bellini, Marco ^[1]

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1. LENS, Via Nello Carrara 1, 50019 Sesto Fiorentino, Florence (Italy)
2. Istituto Nazionale di Ottica Applicata, Largo E. Fermi, 6, I-50125, Florence (Italy)

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.

• OSTI ID: 20979321
• Journal Information: Physical Review. A, Vol. 74, Issue 5; Other Information: DOI: 10.1103/PhysRevA.74.052114; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BELL THEOREM
DENSITY MATRIX
DETECTION
INVARIANCE PRINCIPLES
OPTICS
PHOTONS
QUANTUM ENTANGLEMENT
QUANTUM MECHANICS