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Visualising Berry phase and diabolical points in a quantum exciton-polariton billiard

Estrecho, Eliezer (Eli); Gao, Tingge; Brodbeck, Sebastian; Kamp, Martin; Schneider, Christian; Höfling, S; Truscott, Andrew; Ostrovskaya, Elena

Description

Diabolical points (spectral degeneracies) can naturally occur in spectra of two-dimensional quantum systems and classical wave resonators due to simple symmetries. Geometric Berry phase is associated with these spectral degeneracies. Here, we demonstrate a diabolical point and the corresponding Berry phase in the spectrum of hybrid light-matter quasiparticles - exciton-polaritons in semiconductor microcavities. It is well known that sufficiently strong optical pumping can drive...[Show more]

CollectionsANU Research Publications
Date published: 2016
Type: Journal article
URI: http://hdl.handle.net/1885/153632
Source: Scientific Reports
DOI: 10.1038/srep37653

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