Cooperative optical response of 2D dense lattices with strongly correlated dipoles

Strongly correlated quantum walks in optical lattices.

Full control over the dynamics of interacting, indistinguishable quantum particles is an important prerequisite for the experimental study of strongly correlated quantum matter and the implementation of high-fidelity quantum information processing. We demonstrate such control over the quantum walk-the quantum mechanical analog of the classical random walk-in the regime where dynamics are domina...

Cooperative Interactions in Lattices of Atomic Dipoles

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Strongly Correlated Bosons In One-Dimensional Optical Lattices

Strongly correlated ultra-cold bosonic atoms in optical lattices

A major focus in condensed matter physics is to study the origin of exotic quantum phases such as coexistent and inhomogeneous phases, quantum criticality, and secondary ordered phases close to quantum critical points. Exotic phenomena in strongly correlated systems occur due to competing complex interactions of spin, charge, lattice, and orbital degrees of freedom. Complex quantum phases in st...

Strongly correlated Fermi-Bose mixtures in disordered optical lattices

We investigate theoretically the low-temperature physics of a twocomponent ultracold mixture of bosons and fermions in disordered optical lattices. We focus on the strongly correlated regime. We show that, under specific conditions, composite fermions, made of one fermion plus one bosonic hole, form. The composite picture is used to derive an effective Hamiltonian whose parameters can be contro...