Quantum entanglement with acousto-optic modulators: Two-photon beats and Bell experiments with moving beam splitters

Journal Article · Tue Apr 01 00:00:00 EST 2003 · Physical Review. A

DOI:https://doi.org/10.1103/PhysRevA.67.042115· OSTI ID:20633945

Stefanov, Andre; Zbinden, Hugo; Gisin, Nicolas ^[1]; Suarez, Antoine ^[2]

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1. Group of Applied Physics, University of Geneva, 1211 Geneva 4 (Switzerland)
2. Center for Quantum Philosophy, P.O. Box 304, 8044 Zurich (Switzerland)

We present an experiment testing quantum correlations with frequency shifted photons. We test Bell inequality with two-photon interferometry where we replace the beam splitters with acousto-optic modulators, which are equivalent to moving beam splitters. We measure the two-photon beats induced by the frequency shifts, and we propose a cryptographic scheme in relation. Finally, setting the experiment in a relativistic configuration, we demonstrate that the quantum correlations are not only independent of the distance but also of the time ordering between the two single-photon measurements.

• OSTI ID: 20633945
• Journal Information: Physical Review. A, Vol. 67, Issue 4; Other Information: DOI: 10.1103/PhysRevA.67.042115; (c) 2003 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
BELL THEOREM
CORRELATIONS
DISTANCE
INTERFEROMETRY
OPTICS
PHOTON BEAMS
PHOTONS
QUANTUM MECHANICS
RELATIVISTIC RANGE
TESTING
TWO-DIMENSIONAL CALCULATIONS
VISIBLE RADIATION