Non-reciprocal transport of Exciton-Polaritons in a non-Hermitian chain

Abstract

We consider theoretically the dynamics of exciton-polaritons in a zigzag chain of coupled elliptical micropillars subjected to incoherent excitation. The driven-dissipative nature of the system along with the naturally present polarization splitting inside the pillars gives rise to the non-reciprocal dynamics, which eventually leads to the non-Hermitian skin effect, where all the modes of the system collapse to one edge. As a result, the polaritons propagate only in one direction along the chain, independent of the excitation position, and the propagation in the opposite direction is suppressed. The system shows fair robustness against the typical disorder present in modern samples. Finally, using the bistable nature of the polaritons we show that information encoded in the bistability can be transferred only one way. This paves the way for compact and robust feedback-free one-dimensional polariton transmission channels without the need for an external magnetic field, which are compatible with proposals for polaritonic circuits.

7 pages main draft + 9 pages supplementary

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• Quantum fluids of light in all-optical scatterer lattices
• From the topological spin-Hall effect to the non-Hermitian skin effect in an elliptical micropillar chain
• Interaction induced bi-skin effect in an exciton-polariton system
• Perfect nonreciprocity by loss engineering
• Generalized Quantum Geometric Tensor in a Non-Hermitian Exciton-Polariton System
• Non-Hermitian skin effect induced by Rashba-Dresselhaus spin-orbit coupling
• Non-reciprocal Exciton-Polariton Ring Lattices
• Optically induced topological spin-valley Hall effect for exciton polaritons
• All-optical linear polarization engineering in single and coupled exciton-polariton condensates
• Non-Hermitian topological exciton-polariton corner modes
• Topology with memory in nonlinear driven-dissipative photonic lattices
• Non-Markovian skin effect
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• Phase Transitions in Nonreciprocal Driven-Dissipative Condensates
• Grating-based microcavity with independent control of resonance energy and linewidth for non-Hermitian polariton system
• Coexistence of non-Hermitian skin effect and extended states in one-dimensional nonreciprocal lattices
• Topological enhancement of exciton-polariton coherence with non-Hermitian morphing
• Spin-dependent gain and loss in photonic quantum spin Hall systems
• Non-Hermitian synthetic lattices with light-matter coupling
• Non-Hermitian skin effect and electronic nonlocal transport
• Supercurrent from the imaginary part of the Andreev levels in non-Hermitian Josephson junctions
• Direct Measurement of a Non-Hermitian Topological Invariant in a Hybrid Light-Matter System
• Size-Dependent Skin Effect Transitions in Weakly Coupled Non-Reciprocal Chains