Polarization entangled photon pair generation in optical fibers with birefringence

Wei Zhang; Qiang Zhou; Pengxiang Wang; Yidong Huang; Jiangde Peng

doi:10.1117/12.902030

25 October 2011 Polarization entangled photon pair generation in optical fibers with birefringence

Wei Zhang, Qiang Zhou, Pengxiang Wang, Yidong Huang, Jiangde Peng

Proceedings Volume 8011, 22nd Congress of the International Commission for Optics: Light for the Development of the World; 80114P (2011) https://doi.org/10.1117/12.902030
Event: International Commission for Optics (ICO 22), 2011, Puebla, Mexico

Abstract

Spontaneous four-wave mixing (SFWM) in optical fibers is an important way to generate correlated/entangled photon pairs. When the pulsed pump light passes through the optical fiber, two kinds of SFWM will take place simultaneously. One is scalar scattering processes, in which two annihilated pump photons and generated photon pair are all polarized along the same fiber polarization axis. The other is vector scattering processes, in which two annihilated pump photons are polarized along different fiber polarization axes, either to the two photons of the generated pair. If the fiber has large group birefringence, the intensity of vector scattering processes will be suppressed at the phase matching frequencies of the scalar scattering processes. On the other hand, the walk-off effect of the pump pulse components polarized along the two fiber polarization axes also suppresses the vector scattering processes. Hence, by proper pump polarization and signal/idle frequency selection, photon pairs can be generated only by the two independent scalar scattering processes in optical fibers with birefringence, which provide a simple way to realize polarization entangled photon pair generation. In this paper, related experiments based on the high nonlinearity microstructure fiber (HN-MSF) with group birefringence and polarization maintained dispersion shifted fiber (PM-DSF) are introduced, showing their potential on developing practical quantum light sources.

Citation Download Citation

Wei Zhang, Qiang Zhou, Pengxiang Wang, Yidong Huang, and Jiangde Peng "Polarization entangled photon pair generation in optical fibers with birefringence", Proc. SPIE 8011, 22nd Congress of the International Commission for Optics: Light for the Development of the World, 80114P (25 October 2011); https://doi.org/10.1117/12.902030

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KEYWORDS

Polarization

Photon polarization

Scattering

Birefringence

Optical fibers

Photon counting

Signal detection

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