When:
Thursday, April 7, 2016
4:00 PM - 5:00 PM CT
Where: Technological Institute, F160, 2145 Sheridan Road, Evanston, IL 60208 map it
Audience: Faculty/Staff - Student - Public - Post Docs/Docs - Graduate Students
Contact:
Pamela Villalovoz
(847) 491-3644
Group: Physics and Astronomy Condensed Matter Physics Seminars
Category: Academic
Title: Topology and Localization with Long-range Interactions
Speaker: Chris Laumann, University of Washington
Abstract:
The trapping of ultracold atomic gases has opened new windows into the quantum phases of neutral particles. A remarkable amount of pretty physics - Bose condensation, Cooper paired superfluidity and Mott localization - has been observed. Even more remarkably this has been done with interactions, which are typically short-ranged and weak.
Recent progress in the control of long-range interacting systems — polar molecules, Rydberg atoms and trapped ions — allows a completely different piece of physics to enter the game. In this talk, I will review the general setting and then give two examples of how long-range interactions can lead to new physics inaccessible in existing systems.
First, I will describe the adiabatic preparation of topologically ordered phases in driven, dipolar-interacting spin systems. Second, in the presence of strong disorder, I will show that these systems can directly explore physics beyond that of single particle Anderson localization and will comment on recent experiments. Finally, time permitting, I will combine these stories and describe how localization can protect topological order far out-of-equilibrium.
Speaker Schedule
Keywords: Physics, Astronomy, CMP