QUROPE Quantum Information Processing and Communication in Europe

J. I. Cirac (P3c MPQ), invited seminar, Dissipation: A New tool in Quantum Information Science

J.I. Cirac (P3c MPQ), invited seminar, Efficient descriptions of quantum many-body system

J. I. Cirac (P3c MPQ), invited presentations, Tensor network approach to many-body quantum systems

J. I. Cirac (P3c MPQ), invited presentation, Efficient description of quantum many-body systems

J.I. Cirac (P3c MPQ), invited presentation, Time-dependent methods for many-body quantum systems

J.I. Cirac (P3c MPQ), invited presentation, Theoretical methods for many-body quantum systems

J.I. Cirac (P3c MPQ), Research visit

J. I. Cirac (P3c MPQ), Research visit

Quantum phases of matter are characterized by the underlying correlations of the many-body system. Although this is typically captured by a local order parameter, it has been shown that a broad class of many-body systems possesses a hidden non-local order. In the case of bosonic Mott insulators, the ground state properties are governed by quantum fluctuations in the form of correlated particle-hole pairs that lead to the emergence of a non-local string order in one dimension.

We present a proposal for a versatile cold-atom-based quantum simulator of relativistic fermionic theories and topological insulators in arbitrary dimensions. The setup consists of a spin-independent optical lattice that traps a collection of hyperfine states of the same alkaline atom, to which the different degrees of freedom of the field theory to be simulated are then mapped. We show that the combination of bi-chromatic optical lattices with Raman transitions can allow the engineering of a spin-dependent tunneling of the atoms between neighboring lattice sites.