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Please use this identifier to cite or link to this item: http://hdl.handle.net/2289/6799
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dc.contributor.authorRoy, Dibyendu-
dc.date.accessioned2017-11-30T07:12:07Z-
dc.date.available2017-11-30T07:12:07Z-
dc.date.issued2017-09-
dc.identifier.citationPhysical Review A, 2017 Vol.96, p033838en_US
dc.identifier.issn2469-9934 (online)-
dc.identifier.issn2469-9926-
dc.identifier.urihttp://hdl.handle.net/2289/6799-
dc.descriptionOpen Accessen_US
dc.description.abstractLight propagation in a nonlinear optical medium is nonreciprocal for spatially asymmetric linear permittivity. We examine the physical mechanism and properties of such nonreciprocity (NR). For this, we calculate the transmission of light through two models of a nonlinear optical isolator consisting of (a) a two-level atom and (b) a driven Λ-type three-level atom coupled asymmetrically to light inside open waveguides. We find a higher NR in the model (b) than in the model (a) due to a stronger optical nonlinearity in the former. We determine the critical intensity of incident light for maximum NR and a dependence of the corresponding NR on asymmetry in the coupling. Surprisingly, we find that it is mainly coherent elastic scattering compared to incoherent scattering of incident light which causes maximum NR near the critical intensity. We also show a higher NR of an incident light in the presence of an additional weak light at the opposite port.en_US
dc.language.isoenen_US
dc.publisherAmerican Physical Societyen_US
dc.relation.urihttp://arxiv.org/abs/1611.05050en_US
dc.relation.urihttp://dx.doi.org/10.1103/PhysRevA.96.033838en_US
dc.rights2017 American Physical Societyen_US
dc.titleCritical features of nonlinear optical isolators for improved nonreciprocity.en_US
dc.typeArticleen_US
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