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Dr. Pietro Massignan

ICFO - Institute of Photonic Sciences, Mediterranean Technology Park (Barcelona, Spain)

Friday, June 28th, 2013 at 09:30:00 AM  

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

Published on-line at 03:31:21 PM on Thursday, June 20th, 2013

Strongly-interacting quantum mixtures and synthetic gauge fields in synthetic dimensions

Strong synthetic magnetic fluxes for quantum Hall physics and investigation of Hofstadter-type butterfly spectra.

In this talk I will first present the possible quasiparticles states of a few impurities in a Fermi gas, i.e., the polarons, molecules, and trimers, discussing their static and dynamic properties. I will then show how this information may be used to infer the phase diagram of strongly-interacting imbalanced Fermi mixtures, and to address the long-standing open issue of Itinerant Ferromagnetism.

Next, I will discuss how an internal or local degree of freedom (such as the spin state of a particle) may be used as an extra-dimension, which is generally discrete and compact. Boundary conditions in this extra-dimension may be left open, or may be closed to become periodic, or even twisted with an arbitrary phase to simulate, e.g., Moebius strips.

Here I will present proposals for generating strong synthetic magnetic fluxes, opening the way to the investigation of quantum Hall physics and Hofstadter-type butterfly spectra (image credits: James Hedberg for Columbia University).

For further informations, please contact Dr. Matteo Zaccanti.