Mercoledì 30 gennaio 2019
Ore 14.00
Sala Seminari, Piano I, Edificio U5 – via Roberto Cozzi 55, Milano
Relatore: Timothy C. H. Liew – School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore
Titolo: Spinor and nonlinear effects in Exciton- polariton lattices
Abstract. Exciton-polaritons are hybrid states of light and matter existing in semiconductor heterostructures. They have been typically studied in planar microcavities containing quantum wells, exhibiting spin-sensitive phenomena such as the optical spin Hall effect and nonlinear effects such as solitons and bistability. More recently, there has been a growing interest in studying exciton-polaritons in patterned lattices, where the interplay of spin-orbit interaction with magnetic field was shown to give rise to topological physics. Furthermore, as we will show, the spin sensitivity of nonlinear interactions allows exciton-polaritons in lattices to demonstrate complex phenomena, such as that of cellular automata."