Photonic topological states: from microwaves to optics

TYPESolid State Institute Seminar
Speaker:Dr. Maxim Gorlach
Affiliation:Metamaterials Laboratory, ITMO University Saint Petersburg, Russia
Time:12:30 - 13:30
Location:Solid State Auditorium(Entrance)
Remark:Host: Distinguished Professor Moti Segev and Assistant Professor Ido Kaminer

In this talk I will overview the recent advances of our group at Nanophotonics and Metamaterials
department at ITMO University in the field of topological photonics focusing on the following
1. Topological edge states in zigzag arrays. This includes their theoretical description and
experimental investigation in microwaves and optics, both on plasmonic and all-dielectric
2. Time-reversal-invariant photonic topological systems in 1, 2 and 3 dimensions with the
topological states enabled by the bianisotropic response of the structure. Both theoretical description
and recent experimental results will be summarized.
3. Extraction of the topological invariant of a 2D metasurface from the measured far-field scattering
spectra. Such far-field spectroscopy of topological invariants provides an alternative paradigm to
the conventional near-field technique based on the edge state microscopy.
4. Interaction-induced topological edge states of bound photon pairs realized in the interacting
quantum regime: theoretical model and the proposed platform for experimental realization.