Many body population trapping in ultracold dipolar gases

Abstract

A system of interacting dipoles is of paramount importance for understanding of many-body physics. The interaction between dipoles is {\it anisotropic} and {\it long-range}. While the former allows to observe rich effects due to different geometries of the system, long-range ($1/r^3$) interactions lead to strong correlations between dipoles and frustration. In effect, interacting dipoles in a lattice form a paradigmatic system with strong correlations and exotic properties with possible applications in quantum information technologies, and as quantum simulators of condensed matter physics, material science, etc. Notably, such a system is extremely difficult to model due to a proliferation of interaction induced multi-band excitations for sufficiently strong dipole-dipole interactions. In this article we develop a consistent theoretical model of interacting polar molecules in a lattice by applying the concepts and ideas of ionization theory which allows us to include highly excited Bloch bands. Additionally, by involving concepts from quantum optics (population trapping), we show that one can induce frustration and engineer exotic states, such as Majumdar-Ghosh state, or vector-chiral states in such a system.

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References in corpus (7)

• A High Phase-Space-Density Gas of Polar Molecules
• Realizing a lattice spin model with polar molecules
• Repulsively bound atom pairs in an optical lattice
• Non-equilibrium quantum magnetism in a dipolar lattice gas
• Supersolid phases in the one dimensional extended soft core Bosonic Hubbard model
• Spin-Nematic and Spin-Density-Wave Orders in Spatially Anisotropic Frustrated Magnets in a Magnetic Field
• Bose-Hubbard model with occupation dependent parameters

Cited by in corpus (2)

• Non-standard Hubbard models in optical lattices: a review
• Physics of higher orbital bands in optical lattices: a review