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Entangled photon generation in a phase-modulated, quasi-phasematched crystal
Published
Author(s)
Paulina S. Kuo, Jason S. Pelc, Oliver T. Slattery, Yong-Su Kim, Xiao Tang
Abstract
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.
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], https://doi.org/10.1117/12.2024286
(Accessed October 27, 2025)