Scientific Results

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

Year: 2013

Authors: Umucalilar R. O., Carusotto I.

Autors Affiliation: INO-CNR BEC Center and Dipartimento di Fisica, Università di Trento, I-38123 Povo, Italy

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.

Journal/Review: PHYSICS LETTERS A

Volume: 377 (34-36)      Pages from: 2074  to: 2078

More Information: We are grateful to A. Imamoglu, R. Santachiara, T. Volz and M. Fleischhauer\’s group for stimulating exchanges. This work has been supported by ERC through the QGBE grant and by Provincia Autonoma di Trento.
KeyWords: strongly interacting photons; fractional quantum Hall_effect; Berry phase; nonlinear optics; quantum fluid
DOI: 10.1016/j.physleta.2013.06.011

Citations: 18
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