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Dr. Matteo Rizzi

Max-Planck Institut fur Quantenoptik, Garching

Tuesday, January 24th, 2012 at 11:00:00 AM  

Conference room Querzoli - LENS - via Nello Carrara 1 - Sesto Fiorentino (Florence)

Published on-line at 02:40:05 PM on Monday, January 23rd, 2012

An optical-lattice-based quantum simulator for relativistic field theories and topological insulators

Relativistic fermionic theories and topological insulators can be simulated via a cold-atom-based quantum simulator with spin-independent optical lattice.

This talk will be focused on 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. 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. These assisted-hopping processes can be employed for the quantum simulation of various interesting models, ranging from noninteracting relativistic fermionic theories to topological insulators. A toolbox for the realization of different types of relativistic lattice fermions will be presented: it can be exploited to synthesize the majority of phases in the periodic table of topological insulators.

For further informations, please contact Dr. Augusto Smerzi.