title: Observation of a Superradiant Mott Insulator in the Dicke-Hubbard Model.
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.
authors.affiliation: Institut für Laser-Physik, Universität Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany.
authors.forename: J
authors.initials: J
authors.lastname: Klinder
authors.affiliation: Institut für Laser-Physik, Universität Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany.
authors.forename: H
authors.initials: H
authors.lastname: Keßler
authors.affiliation: I. Institut für Theoretische Physik, Universität Hamburg, Jungiusstraße 9, 20355 Hamburg, Germany.
authors.forename: M Reza
authors.initials: MR
authors.lastname: Bakhtiari
authors.affiliation: I. Institut für Theoretische Physik, Universität Hamburg, Jungiusstraße 9, 20355 Hamburg, Germany.
authors.forename: M
authors.initials: M
authors.lastname: Thorwart
authors.affiliation: Institut für Laser-Physik, Universität Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany.|Wilczek Quantum Center, Zhejiang University of Technology, Hangzhou 310023, China.
authors.forename: A
authors.initials: A
authors.lastname: Hemmerich