Chiral Gain Photonics

CFM Seminars

Speaker

Mário Silveirinha
Instituto Superior Técnico and Instituto de Telecomunicações, University of Lisbon

When

2024/06/26
15:00

Place

CFM Auditorium

Host

Ivo Souza

Add to calendar

iCal

CFM Colloquium Series

I will present an overview of the work of my group on chiral-gain photonics. We have recently shown that low-symmetry materials possessing a non-trivial Berry curvature dipole can facilitate a non-Hermitian linear electro-optic effect [1-3]. This effect uniquely enables the control of optical gain based on the handedness of the electromagnetic field polarization, laying the foundation for precise control
over the material response using light polarization. Here, I will present our most recent theoretical explorations of non-equilibrium optical systems, such as those influenced by static electric fields or composed of time-varying materials, to craft a new class of active and nonreciprocal metamaterials with chiral-gain. I will show how to harness the chiral-gain to implement chiral lasers, non-Hermitian polarization controlled mirrors, and related systems. These capabilities introduce a transformative dimension to optical device engineering, promising novel functionalities in nanophotonics.
Furthermore, I will discuss some topological aspects of materials with chiral-gain and the interaction of qubits with chiral-gain platforms.