Synthetic gauge fields: from topology to the Unruh effect (A. Celi)
- Date: Mar 30, 2017
- Time: 02:00 PM - 03:00 PM (Local Time Germany)
- Speaker: Alessio Celi
- ICFO The Institute of Photonic Sciences
- Room: Herbert Walther Lecture Hall
- Host: MPQ, Theory Division
In this talk, I will focus on the possibilities opened by synthetic gauge fields. In the first part, after a brief review of "synthetic dimension" idea, I will discuss in which sense and to what extend a narrow Hofstadter model, as for instance obtained with synthetic lattices, displays the topological properties of a large 2D system pierced by the same flux. In particular, I will show that such narrow systems allow for a surprising accurate measurement of the Chern number through an appropriate Laughlin pump experiment.
In the second part of the talk I will move to an apparently unrelated subject, the simulation of Dirac fermions in artificial curved spacetime. In fact, I will show that such simulation can be achieved through laser assisted tunneling and synthetic gauge fields. As an application, I will present our recent proposal for observing the Unruh effect with ultracold atoms.