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Nonperiodic optical superlattice lithium niobate waveguides for the generation of polarization entanglement

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Abstract

We implement a nondegenerate polarization-correlated photon-pair source on titanium-diffused nonperiodically-poled lithium niobate waveguides. The nonperiodic domains are optimized using genetic algorithm to maximize and equalize efficiencies of the spontaneous parametric down-conversion processes.

© 2020 The Author(s)

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