Colloquium

Topological physics: from photons to electrons

Friday, 23 October 2020 02:30PM PDT
Print

Colloquium

Mohammad Hafezi
University of Maryland

Topological physics: from photons to electrons

Oct 23, 2020 at 2:30pm online

*Register at the following link to join seminar: 
https://sfu.zoom.us/meeting/register/tZIoc-2vrTMiH9QXvGROEWUjsIpTSJKcwOlr
Access link will be sent to your email address after registration

Synopsis

There are many intriguing physical phenomena that are associated with topological features --- global properties that are not discernible locally. The best-known examples are quantum Hall effects in electronic systems, where insensitivity to local properties manifests itself as conductance through edge states which are insensitive to defects and disorder. In the talk, we first discuss how similar physics can be explored with photons; specifically, how various topological model can be simulated in various photonics systems, from ring resonators to photonic crystals. We then discuss that the integration of strong optical nonlinearity can lead to unique bosonic phenomena, such as a topological source of quantum light and chiral quantum optics. These results may enable the development of classical and quantum optical devices with built-in protection for next-generation optoelectronic and quantum technologies. 

For a review of early works: Rev. Mod. Phys. 91, 015006 (2019)