Condensed Matter Seminar, Gil Refael, "Light matters - from Floquet topological insulators to topological polaritons"

Mon, Apr 14, 2014, 1:15 pm to 2:30 pm
Location: 
PCTS Seminar Room
In my talk I will present fresh findings on the possibility of producing a topological polariton (nicknamed topolariton) in trivial quantum-wells coupled to extended optical cavities. The idea of a topolariton emerges naturally from the concept of Floquet topological insulators. First, I will review how an external periodic drive can lead to a Floquet topological spectrum in a trivial 2d quantum well. Next, I will focus on exciton-polaritons, and present some toy models of quantum-wells coupled to optical cavities that exhibit 'topolaritons' - i.e., chiral edge modes that are superpositions of photons and excitons.