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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 37, Iss. 10 — May. 15, 2012
  • pp: 1679–1681

Polarization entanglement generation at 1.5 μm based on walk-off effect due to fiber birefringence

Qiang Zhou, Wei Zhang, Pengxiang Wang, Yidong Huang, and Jiangde Peng  »View Author Affiliations

Optics Letters, Vol. 37, Issue 10, pp. 1679-1681 (2012)

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In this Letter, a linear scheme to generate polarization entanglement at 1.5 μm based on commercial polarization maintained dispersion shifted fiber (PM-DSF) is proposed. The birefringent walk-off effect of the pulsed pump light in the PM-DSF provides an effective way to suppress the vector scattering processes of spontaneous four-wave mixing. A 90 deg offset of fiber polarization axes is introduced at the midpoint of the fiber to realize the quantum superposition of the two correlated photon states generated by the two scalar processes on different fiber polarization axes, leading to polarization entanglement generation. Experiments of the indistinguishable property on single-side and two-photon interference in two nonorthogonal polarization bases are demonstrated. A two-photon interference fringe visibility of 89±3% is achieved without subtracting the background counts, demonstrating its great potential in developing highly a efficient and stable fiber based polarization-entangled quantum light source at the optical communication band.

© 2012 Optical Society of America

OCIS Codes
(190.4380) Nonlinear optics : Nonlinear optics, four-wave mixing
(270.0270) Quantum optics : Quantum optics

ToC Category:
Quantum Optics

Original Manuscript: January 2, 2012
Revised Manuscript: February 17, 2012
Manuscript Accepted: February 22, 2012
Published: May 10, 2012

Qiang Zhou, Wei Zhang, Pengxiang Wang, Yidong Huang, and Jiangde Peng, "Polarization entanglement generation at 1.5 μm based on walk-off effect due to fiber birefringence," Opt. Lett. 37, 1679-1681 (2012)

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