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arXiv · 1511.00850

Observation of a superradiant Mott insulator in the Dicke-Hubbard model

J. Klinder·H. Keßler·M. Reza Bakhtiari·M. Thorwart·A. Hemmerich
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Abstract

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.

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J. Klinder, H. Keßler, M. Reza Bakhtiari, M. Thorwart, A. Hemmerich. 2015-12-07. Observation of a superradiant Mott insulator in the Dicke-Hubbard model. https://doi.org/10.1103/physrevlett.115.230403

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