Abstract:
Recent years have seen a surge of advancements in optical manipulation over bosonic quasiparticles known as exciton-polaritons that form in semiconductor microcavities in the strong light-matter coupling regime. Their high Coulomb interaction strengths, nonlinearities, picosecond timescales, and optical addressability makes them an excellent testbed to explore physics at the interface of condensed matter and optics, such as nonequilibrium Bose-Einstein condensation, low threshold lasing, driven superfluidity, and much more. Here, I will present some of my recent results based on a reprogrammable optical platform supporting large-scale coherent networks of coupled exciton-polariton condensates. The flexible in-situ optical tuning over many network- and condensate parameters allows us to simulate and explore a variety of physical systems ranging from (i) the spontaneous synchronization of polariton condensates in the form of time-delayed oscillators, (ii) extended Bloch-mode polariton lasing in two-dimensional artificial optical lattices, (iii) geometrically frustrated pumping patterns promoting high-charge quantized vorticity, (iv) simulation of spin Hamiltonians such as the XY and Ising systems, (v) and fractal diffraction patterns in nonlinear polariton Penrose quasicrystals. Many of these achievements were realized in high quality GaAs-based cavities. If time allows, I will explain how my past research ties into a new generation of materials and cavities based on lead-halide-perovskites that open new opportunities to harness and apply polariton physics at ambient conditions for optical neuromorphic computing, and optoelectronic and spinoptronic technologies.
This special seminar will take place on 19 March, 1PM-2PM, only ONLINE under the following link:
https://us06web.zoom.us/j/83304954210?pwd=xu1mEi7ezWBRmmCONbSxQjIjxib0xm.1Meeting ID: 833 0495 4210
Passcode: 570749
