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Many-body braiding phases in a rotating strongly correlated photon gas (Articolo in rivista)

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Many-body braiding phases in a rotating strongly correlated photon gas (Articolo in rivista) (literal)

Anno

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Alternative label

Umucalilar, R. O.; Carusotto, I. (2013)
Many-body braiding phases in a rotating strongly correlated photon gas
in Physics Letter A (Print)
(literal)

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INO-CNR BEC Center, Dipartimento di Fisica, Università di Trento, I-38123 Povo, Italy; TQC, Universiteit Antwerpen, Univer-siteitsplein1, B-2610 Antwerpen, Belgium (literal)

Titolo

Many-body braiding phases in a rotating strongly correlated photon gas (literal)

Abstract

We present a theoretical study of fractional quantum Hall physics in a rotating gas of strongly interacting photons in a single cavity with a large optical nonlinearity. Photons are injected into the cavity by a Laguerre-Gauss laser beam with a non-zero orbital angular momentum. The Laughlin-like fewphoton eigenstates appear as sharp resonances in the transmission spectra. Using additional localized repulsive potentials, quasi-holes can be created in the photon gas and then braided around in space: an unambiguous signature of the many-body Berry phase under exchange of two quasi-holes is observed as a spectral shift of the corresponding transmission resonance. (C) 2013 Elsevier B.V. All rights reserved. (literal)

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