Non-Hermitian skin effect induced by Rashba-Dresselhaus spin-orbit coupling

Kokhanchik, Pavel; Solnyshkov, D. D.; Malpuech, Guillaume

doi:10.1103/physrevb.108.l041403

Cited by 4 publications

(1 citation statement)

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“…It was pointed out in [58] that the NHSE can be attained in polariton systems by arranging a phase dependent coupling between two chains of modes with different gain/loss. Examples of realizing such a model include using the coupling between spin states in chains of elliptical micropillars [57], the coupling between vortex modes in chains of polariton rings [59], and most recently the coupling of spin states using Rashba-Dresselhaus spin-orbit coupling (RDSOC) [63,64] in liquid crystal filled microcavities [65]. The latter proposal has pointed out that the NHSE can occur in continuous waveguides, without a lattice.…”

Section: Modelmentioning

confidence: 99%

Topological enhancement of exciton-polariton coherence with non-Hermitian morphing

Bao,

Xu,

Verstraelen

et al. 2023

Phys. Rev. B

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The non-Hermitian skin effect (NHSE) has been intensely investigated over the past few years and has unveiled new topological phases, which have no counterparts in Hermitian systems. Here we consider the hybridization between the NHSE in an exciton-polariton waveguide and a localized defect mode. By tuning the non-Hermiticity, we find that the resulting ground state of the system is both spatially extended and energetically separated from other modes in the system. When polariton lasing occurs in the system, we find an enhanced spatial coherence (of typically 30 times longer) compared to regular waveguides, which is robust in the presence of disorder.

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