Spontaneous and superfluid chiral edge states in exciton-polariton condensates

H. Sigurdsson*, G. Li, T. C.H. Liew

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)

Abstract

We present a scheme of interaction-induced topological band structures based on the spin anisotropy of exciton-polaritons in semiconductor microcavities. We predict theoretically that this scheme allows the engineering of topological gaps, without requiring a magnetic field or strong spin-orbit interaction (transverse electric-transverse magnetic splitting). Under nonresonant pumping we find that an initially topologically trivial system undergoes a topological transition upon the spontaneous breaking of phase symmetry associated with polariton condensation. Under either nonresonant or resonant coherent pumping we find that it is also possible to engineer a topological dispersion that is linear in wave vector - a property associated with polariton superfluidity.

Original languageEnglish
Article number115453
JournalPhysical Review B
Volume96
Issue number11
DOIs
Publication statusPublished - 29 Sept 2017

Bibliographical note

Publisher Copyright:
© 2017 American Physical Society. uk.

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