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Entangled photon generation in a phase-modulated, quasi-phasematched crystal



Paulina S. Kuo, Jason S. Pelc, Oliver T. Slattery, Yong-Su Kim, Xiao Tang


We propose a scheme to generate polarization-entangled photon pairs by spontaneous parametric downconversion in a phase-modulated, type-II, quasi-phasematched (QPM) crystal. Instead of using two distinct crystals to generate |HV>and |VH> states, the phase-modulated QPM grating allows both states to be generated simultaneously in a distributed fashion throughout the nonlinear crystal. Temporal compensation is still needed to correct for effects of birefringence in the crystal. The distributed generation of the polarization-entangled photons is compared to generation using two sequential crystals.
Proceedings Title
Quantum Communications and Quantum Imaging XI
Conference Dates
August 25-29, 2013
Conference Location
San Diego, CA
Conference Title
SPIE Optics + Photonics


quantum optics, nonlinear optics, parametric processes, polarization entangled pair source, spontaneous parametric downconversion, entanglement


Kuo, P. , Pelc, J. , Slattery, O. , Kim, Y. and Tang, X. (2013), Entangled photon generation in a phase-modulated, quasi-phasematched crystal, Quantum Communications and Quantum Imaging XI, San Diego, CA, [online], (Accessed July 17, 2024)


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Created October 14, 2013, Updated November 10, 2018