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HL: Fachverband Halbleiterphysik

HL 22: Focus Session: Emerging Semiconductor Laser Concepts

HL 22.2: Hauptvortrag

Freitag, 1. Oktober 2021, 10:30–11:00, H4

Room-temperature polariton lattices for quantum simulation — •Stephane Kena-Cohen — Polytechnique Montreal, Montreal, Canada

Polaritons are quasiparticles that form in semiconductor microcavities when the light-matter interaction rate is faster than the dissipation rate. At high densities, these quasiparticles can condense into a single macroscopic state that behaves qualitatively like a conventional laser. In addition to possessing intrinsically low lasing thresholds, the strong nonlinearities and tunability of polaritons is currently being exploited to realize efficient nonlinear devices and for quantum information.

In this talk, we will describe 2 platforms that allow for the formation of room-temperature polariton lasers: organic semiconductors and halide perovskites. We will describe the basic physics behind such devices and recent experiments where lattices were used to realize analog quantum simulators (e.g. XY Hamiltonian) under ambient conditions.