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Phys Rev Lett. 2012 May 18;108(20):206809. Epub 2012 May 18.

Fractional quantum Hall states of photons in an array of dissipative coupled cavities.

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


We report a theoretical study of the collective optical response of a two-dimensional array of nonlinear cavities in the impenetrable photon regime under a strong artificial magnetic field. Taking advantage of the nonequilibrium nature of the photon gas, we propose an experimentally viable all-optical scheme to generate and detect strongly correlated photon states which are optical analogs of the Laughlin states of fractional quantum Hall physics.

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