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IMPRS Seminar: Spatial and Temporal Tailoring of Artificial Gauge Potentials in Optical Lattices

Date
Apr 22, 2020
Time
4:45 PM - 5:45 PM
Speaker
Botao Wang
Affiliation
MPI-PKS
Series
IMPRS-MPSSE Seminar
Language
en
Main Topic
Physik
Other Topics
Physik
Description
While the engineering of static and uniform artificial magnetic fields in ultracold atomic systems has drawn tremendous attention, we show that tailoring artificial gauge potentials in both space and time is also of big interest. One example is the implementation of a local magnetic flux insertion, which plays an important role in gedanken experiments of quantum Hall physics. By combining Floquet engineering of artificial magnetic fields with the ability of single-site addressing in quantum gas microscopes, we propose a scheme for the realization of such local solenoid-type magnetic fields in optical lattices. We show that it can be employed to manipulate and probe elementary excitations of a topological Chern insulator. Secondly, we investigate protocols for adiabatic state preparation based on ramping up the vector potential. Taking an interacting bosonic flux ladder as a minimal model, we find that the time required for adiabatic state preparation dramatically depends on which spatial pattern of Peierls phases is used. This can be related to shortcuts to adiabaticity via counterdiabatic driving and opens up new possibilities for adiabatic preparation in quantum simulators with artificial gauge fields.

Last modified: Feb 17, 2020, 12:10:06 AM

Location

Max-Planck-Institut für Physik komplexer SystemeNöthnitzer Straße3801187Dresden
Phone
+ 49 (0)351 871 0
E-Mail
MPI-PKS
Homepage
http://www.mpipks-dresden.mpg.de

Organizer

Max-Planck-Institut für Physik komplexer SystemeNöthnitzer Straße3801187Dresden
Phone
+ 49 (0)351 871 0
E-Mail
MPI-PKS
Homepage
http://www.mpipks-dresden.mpg.de
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