Fermionic Superradiance in a Transversely Pumped Optical Cavity
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Following the experimental realization of Dicke superradiance in Bose gases coupled to cavity light fields, we investigate the behavior of ultracold fermions in a transversely pumped cavity. We focus on the equilibrium phase diagram of spinless fermions coupled to a single cavity mode and establish a zero temperature transition to a superradiant state. In contrast to the bosonic case, Pauli blocking leads to lattice commensuration effects that influence self-organization in the cavity light field. This includes a sequence of discontinuous transitions with increasing atomic density and tricritical superradiance. We discuss the implications for experiment.
Keeling , J , Bhaseen , M J & Simons , B D 2014 , ' Fermionic Superradiance in a Transversely Pumped Optical Cavity ' , Physical Review Letters , vol. 112 , no. 14 , 143002 . https://doi.org/10.1103/PhysRevLett.112.143002
Physical Review Letters
© 2014 American Physical Society. Fermionic Superradiance in a Transversely Pumped Optical Cavity. / Keeling, J.; Bhaseen, M. J.; Simons, B. D. In: Physical Review Letters, Vol. 112, No. 14, 01.04.2014, 143002.