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arXiv · 1810.04750

Non-reciprocity and zero reflection in nonlinear cavities with tailored loss

S. R. K. Rodriguez·V. Goblot·N. Carlon Zambon·A. Amo·J. Bloch
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Abstract

We demonstrate how to tailor the losses of nonlinear cavities in order to suppress their reflection and enhance their non-reciprocal transmission. We derive analytical expressions predicting the existence of zero-reflection channels in single and coupled nonlinear cavities, depending on the driving frequency and loss rates. While suppressing the reflection from a single cavity imposes a stringent condition on the input-output leakage rates, we demonstrate that this condition can be significantly relaxed in systems of coupled cavities. In particular, zero-reflection and non-reciprocity can be achieved across a range of driving frequencies in coupled cavities by tuning the output leakage rate alone. Numerical calculations based on the driven-dissipative Gross-Pitaevksii equation, usually employed to describe microcavity polaritons, reveal the spatial phenomenology associated with zero-reflection states and provide design guidelines for the construction of nonlinear optical isolators.

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S. R. K. Rodriguez, V. Goblot, N. Carlon Zambon, A. Amo, J. Bloch. 2018-10-10. Non-reciprocity and zero reflection in nonlinear cavities with tailored loss. https://doi.org/10.1103/physreva.99.013851

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