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Dr. G. Siviloglou

Massachusetts Institute of Tecnology, USA

Monday, October 8th, 2012 at 11:00:00 AM  

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

Published on-line at 04:49:22 PM on Wednesday, October 3rd, 2012

Two-component rubidium Mott insulators at MIT

Ultracold atoms in optical lattices for spin-gradient thermometry, new type of cooling and Bragg scattering as probe of atomic wave functions.

Loading ultracold atoms in optical lattices provides an ideal system to realize several intriguing phenomena encountered in modern condensed matter physics.

In this talk we will demonstrate that the two-component Bose-Hubbard Hamiltonian in the presence of a magnetic field gradient can be the basis of a spin-gradient thermometry that works in the Mott insulating state, and a new type of cooling that leads to temperatures in the sub-nanokelvin regime. We will discuss how Bragg scattering can be used as a probe of atomic wave functions and quantum phase transitions in optical lattices. And finally we will be reporting experimental evidence on the realization on a dual Mott insulator in spin-dependent lattice.

For further informations, please contact Prof. Massimo Inguscio.