Observation of non-Hermitian degeneracies in a chaotic exciton-polariton billiard

T. Gao, E. Estrecho, K. Y. Bliokh, T. C. H. Liew, M. D. Fraser, S. Brodbeck, M. Kamp, C. Schneider, S. Höfling, Y. Yamamoto, F. Nori, Y. S. Kivshar, A. G. Truscott, R. G. Dall and E. A. Ostrovskaya ()
Additional contact information
T. Gao: Research School of Physics and Engineering, The Australian National University
E. Estrecho: Research School of Physics and Engineering, The Australian National University
K. Y. Bliokh: Research School of Physics and Engineering, The Australian National University
T. C. H. Liew: School of Physical and Mathematical Sciences, Nanyang Technological University
M. D. Fraser: Center for Emergent Matter Science, RIKEN
S. Brodbeck: Technische Physik and Wilhelm-Conrad-Röntgen Research Center for Complex Material Systems, Universität Würzburg
M. Kamp: Technische Physik and Wilhelm-Conrad-Röntgen Research Center for Complex Material Systems, Universität Würzburg
C. Schneider: Technische Physik and Wilhelm-Conrad-Röntgen Research Center for Complex Material Systems, Universität Würzburg
S. Höfling: Technische Physik and Wilhelm-Conrad-Röntgen Research Center for Complex Material Systems, Universität Würzburg
Y. Yamamoto: ImPACT Project, Japan Science and Technology Agency
F. Nori: Center for Emergent Matter Science, RIKEN
Y. S. Kivshar: Research School of Physics and Engineering, The Australian National University
A. G. Truscott: Research School of Physics and Engineering, The Australian National University
R. G. Dall: Research School of Physics and Engineering, The Australian National University
E. A. Ostrovskaya: Research School of Physics and Engineering, The Australian National University

Nature, 2015, vol. 526, issue 7574, 554-558

Abstract: In non-Hermitian systems, spectral degeneracies can arise that can cause unusual, counter-intuitive effects; here exciton-polaritons—hybrid light–matter particles—within a semiconductor microcavity are found to display non-trivial topological modal structure exclusive to such systems.

Date: 2015
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DOI: 10.1038/nature15522

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