Fractional Quantum Hall Physics in Jaynes-Cummings-Hubbard Lattices
  Jaynes-Cummings-Hubbard arrays provide unique opportunities for quantum emulation as they exhibit convenient state preparation and measurement, and in-situ tuning of parameters. We show how to realise strongly correlated states of light in Jaynes-Cummings-Hubbard arrays under the introduction of an effective magnetic field. The effective field is realised by dynamic tuning of the cavity resonances. We demonstrate the existence of Fractional Quantum Hall states by com- puting topological invariants, phase transitions between topologically distinct states, and Laughlin wavefunction overlap. 
Andrew L.C. Hayward, Andrew M. Martin, Andrew D. Greentree
cond-mat.mes-hall quant-ph