Speaker: Jordi Mur-Petit
Affiliation: Clarendon Laboratory, University of Oxford
Date: Saturday, 1 June 2019 at 12:00
Location: Seminar Room, Serrano 121 (CFMAC)
The advent of quantum gases as quantum simulators of mesoscopic
strongly-correlated systems calls for the development of new
experimental and numerical methods to characterise quantum phases beyond
well-established order parameters suitable for systems in the
thermodynamic limit.
In this talk I will present our analysis of two methods to detect phases
and phase transitions in the dipolar Bose-Hubbard model on finite
two-dimensional lattices of sizes similar to those realised in optical
lattice setups [1]. First, I will assess several observables in their
ability to detect superfluidity and density-wave order in small lattice
systems. Then, I will compare this approach with one based on applying
unsupervised machine-learning techniques to single-site-resolved density
measurements.
Time permitting, I will introduce a method to control dipole-dipole
interactions by dressing molecular states with magnetic and microwave
fields, and outline its potential application to implement a quantum
gate between polar molecules [2].
[1] P. Rosson, M. Kiffner, J. Mur-Petit, and D. Jaksch, to be submitted.
[2] M. Hughes, M. D. Frye, D. Jaksch, M. R. Tarbutt, J. M. Hutson, and
J. Mur-Petit, in preparation.