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Visualising Berry phase and diabolical points in a quantum exciton-polariton billiard
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dc.contributor.author | Estrecho, E. | |
dc.contributor.author | Gao, T. | |
dc.contributor.author | Brodbeck, S. | |
dc.contributor.author | Kamp, M. | |
dc.contributor.author | Schneider, C. | |
dc.contributor.author | Höfling, Sven | |
dc.contributor.author | Truscott, A. G. | |
dc.contributor.author | Ostrovskaya, E. A. | |
dc.date.accessioned | 2016-11-28T10:30:18Z | |
dc.date.available | 2016-11-28T10:30:18Z | |
dc.date.issued | 2016-11-25 | |
dc.identifier | 247458711 | |
dc.identifier | 20e173a5-73d2-4aa2-82e9-18e28fe38252 | |
dc.identifier | 84997132391 | |
dc.identifier | 000388485400001 | |
dc.identifier.citation | Estrecho , E , Gao , T , Brodbeck , S , Kamp , M , Schneider , C , Höfling , S , Truscott , A G & Ostrovskaya , E A 2016 , ' Visualising Berry phase and diabolical points in a quantum exciton-polariton billiard ' , Scientific Reports , vol. 6 , 37653 . https://doi.org/10.1038/srep37653 | en |
dc.identifier.issn | 2045-2322 | |
dc.identifier.uri | https://hdl.handle.net/10023/9886 | |
dc.description | This work is supported by the Australian Research Council and the State of Bavaria. | en |
dc.description.abstract | 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 excitonpolaritons to quantum degeneracy, whereby they form a macroscopically populated quantum coherent state similar to a Bose-Einstein condensate. By pumping a microcavity with a spatially structured light beam, we create a two-dimensional quantum billiard for the exciton-polariton condensate and demonstrate a diabolical point in the spectrum of the billiard eigenstates. The fully reconfigurable geometry of the potential walls controlled by the optical pump enables a striking experimental visualisation of the Berry phase associated with the diabolical point. The Berry phase is observed and measured by direct imaging of the macroscopic exciton-polariton probability densities. | |
dc.format.extent | 7 | |
dc.format.extent | 790280 | |
dc.language.iso | eng | |
dc.relation.ispartof | Scientific Reports | en |
dc.subject | QC Physics | en |
dc.subject | T Technology | en |
dc.subject | NDAS | en |
dc.subject.lcc | QC | en |
dc.subject.lcc | T | en |
dc.title | Visualising Berry phase and diabolical points in a quantum exciton-polariton billiard | en |
dc.type | Journal article | en |
dc.contributor.institution | University of St Andrews. School of Physics and Astronomy | en |
dc.contributor.institution | University of St Andrews. Condensed Matter Physics | en |
dc.identifier.doi | 10.1038/srep37653 | |
dc.description.status | Peer reviewed | en |
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