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Photon-pair generation in a quadratically nonlinear parity-time symmetric coupler

Antonosyan, Diana; Solntsev, Alexander; Sukhorukov, Andrey


Integrated nonlinear waveguide structures enable generation of quantum entangled photons. We describe theoretically the effects of spatially inhomogeneous loss on the creation of photon pairs through spontaneous parametric down-conversion in quadratically nonlinear directional couplers, where photons experience effective parity-time (PT) symmetric potential due to the presence of optical loss in one of the waveguides. We show that for losses below the PT-breaking threshold, the quantum photon...[Show more]

CollectionsANU Research Publications
Date published: 2018-02-12
Type: Journal article
Source: Photonics Research
DOI: 10.1364/PRJ.6.0000A6
Access Rights: Open Access


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