Superradiant Mott insulator in the Dicke-Hubbard model

4 December 2015

Photo: AG Hemmerich

It is well known that the bosonic Hubbard model possesses a Mott insulator phase. Likewise, it is known that the Dicke model exhibits a self-organized superradiant phase. By implementing an optical lattice inside of a high finesse optical cavity both models are merged such that an extended Hubbard model with cavity-mediated infinite range interactions arises. In addition to a normal superfluid phase, two superradiant phases are found, one of them coherent and hence superfluid and one incoherent Mott insulating.

Phys. Rev. Lett. 115, 230403

http://arxiv.org/abs/1511.00850

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