You are here: Home / Seminars / Seminar Database / Special CAMP Seminar: Photonic analogues of topological superconductors

Special CAMP Seminar: Photonic analogues of topological superconductors

Main Content

Aashish Clerk, University of Chicago, and McGill University
When
11 October 2017 from 3:30 PM to 4:30 PM
Where
318 Osmond Laboratory
Contact Name
Mikael Rechtsman
Add event to calendar
vCal
iCal

Interest continues to grow in photonic analogues of topological electronic phases.  In most cases, these systems are non-interacting, and have the same band structure and edge state structure as their fermionic counterparts.  In this talk, I’ll discuss recent theory work in my group showing how parametric “two-photon” driving can be used to realize a new class of photonic topological systems that superficially resemble topological superconductors.  Unlike standard particle-number conserving models of non-interacting topological phases, these new systems exhibit crucial differences between their bosonic and fermionic versions.  Further, one can realize a situation where all bulk states are stable, but where edge states are guaranteed to be unstable.  Such a system can form the basis of a useful device:  a topologically-protected amplifier which operates close to the fundamental limits set by quantum mechanics.  I’ll discuss how these ideas could be realized in a variety of different experimental platforms, including superconducting quantum circuits and optomechanics.

Seminars