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Title: Generation of polarization-entangled photon pairs and violation of Bell's inequality using spontaneous four-wave mixing in a fiber loop

Abstract

We report the generation of polarization entangled photon pairs in the 1550-nm wavelength band using spontaneous four-wave mixing in a dispersion-shifted fiber loop. The use of the fiber-loop configuration made it possible to generate polarization entangled states very stably. With accidental coincidences subtracted, we obtained coincidence fringes with >90% visibilities, and observed a violation of Bell's inequality by seven standard deviations. We also confirmed the preservation of the quantum correlation between the photons even after they had been separated by 20 km of optical fiber.

Authors:
;  [1]
  1. NTT Basic Research Laboratories, NTT Corporation, 3-1 Morinosato-Wakamiya, Atsugi, Kanagawa, 243-0198 (Japan)
Publication Date:
OSTI Identifier:
20645992
Resource Type:
Journal Article
Journal Name:
Physical Review. A
Additional Journal Information:
Journal Volume: 70; Journal Issue: 3; Other Information: DOI: 10.1103/PhysRevA.70.031802; (c) 2004 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1050-2947
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; BELL THEOREM; CORRELATIONS; ENERGY LEVELS; FREQUENCY MIXING; MIXING; OPTICAL FIBERS; OPTICS; PHOTONS; POLARIZATION; QUANTUM MECHANICS; WAVELENGTHS

Citation Formats

Takesue, Hiroki, and Inoue, Kyo. Generation of polarization-entangled photon pairs and violation of Bell's inequality using spontaneous four-wave mixing in a fiber loop. United States: N. p., 2004. Web. doi:10.1103/PhysRevA.70.031802.
Takesue, Hiroki, & Inoue, Kyo. Generation of polarization-entangled photon pairs and violation of Bell's inequality using spontaneous four-wave mixing in a fiber loop. United States. https://doi.org/10.1103/PhysRevA.70.031802
Takesue, Hiroki, and Inoue, Kyo. Wed . "Generation of polarization-entangled photon pairs and violation of Bell's inequality using spontaneous four-wave mixing in a fiber loop". United States. https://doi.org/10.1103/PhysRevA.70.031802.
@article{osti_20645992,
title = {Generation of polarization-entangled photon pairs and violation of Bell's inequality using spontaneous four-wave mixing in a fiber loop},
author = {Takesue, Hiroki and Inoue, Kyo},
abstractNote = {We report the generation of polarization entangled photon pairs in the 1550-nm wavelength band using spontaneous four-wave mixing in a dispersion-shifted fiber loop. The use of the fiber-loop configuration made it possible to generate polarization entangled states very stably. With accidental coincidences subtracted, we obtained coincidence fringes with >90% visibilities, and observed a violation of Bell's inequality by seven standard deviations. We also confirmed the preservation of the quantum correlation between the photons even after they had been separated by 20 km of optical fiber.},
doi = {10.1103/PhysRevA.70.031802},
url = {https://www.osti.gov/biblio/20645992}, journal = {Physical Review. A},
issn = {1050-2947},
number = 3,
volume = 70,
place = {United States},
year = {2004},
month = {9}
}