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Proceedings Paper

Two-photon experiments in the frequency domain
Author(s): I. Mbodji; L. Olislager; E. Woodhead; B. Galmes; J. Cussey; L. Furfaro; P. Emplit; S. Massar; K. Phan Huy; J.-M. Merolla
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Paper Abstract

We report on the study of two-photon interference in the frequency domain. Bell and Hong-Ou-Mandel experiments are investigated. These experiments involve the manipulation of photons in the frequency domain, using off-the-shelf telecommunication components such as electro-optic phase modulators and narrow-band frequency filters. In the first experiment, photon pairs entangled in frequency are created and separated. Each photon is then directed through an independent electro-optic phase modulator. Variation of the radio-frequency parameters of the modulation gives rise to a well-controlled Bessel-shape two-photon interference pattern in the frequency domain. This is efficiently measured with narrow-band frequency filters and superconducting single photon detectors. Experimental measurements exhibit high visibilities (over 99 percent both for net and raw visibilities) and allow the (theoretically proven) optimal violation of a Bell inequality for our setup (by more than 18 standard deviations). The second experiment is a Hong-Ou-Mandel experiment in the frequency domain. We show that a grating (spatial domain) or a phase modulator (temporal domain) can be seen as a frequency beam splitter. A broadband spectrum of photon pairs is divided into two interleaved frequency combs, each one used as an independent input to this acting beam splitter. A theoretical calculation shows clear photon anti-bunching behavior.

Paper Details

Date Published: 4 May 2012
PDF: 8 pages
Proc. SPIE 8440, Quantum Optics II, 84400J (4 May 2012); doi: 10.1117/12.923241
Show Author Affiliations
I. Mbodji, CNRS, Institut FEMTO-ST, Univ. de Franche-Comté (France)
L. Olislager, Univ. Libre de Bruxelles (Belgium)
E. Woodhead, Lab. d'Information Quantique, Univ. Libre de Bruxelles (Belgium)
B. Galmes, CNRS, Institut FEMTO-ST, Univ. de Franche-Comté (France)
J. Cussey, Auréa Technology (France)
L. Furfaro, CNRS, Institut FEMTO-ST, Univ. de Franche-Comté (France)
P. Emplit, Univ. Libre de Bruxelles (Belgium)
S. Massar, Univ. Libre de Bruxelles (Belgium)
K. Phan Huy, CNRS, Institut FEMTO-ST, Univ. de Franche-Comté (France)
J.-M. Merolla, CNRS, Institut FEMTO-ST, Univ. de Franche-Comté (France)

Published in SPIE Proceedings Vol. 8440:
Quantum Optics II
Thomas Durt; Victor N. Zadkov, Editor(s)

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