Harnessing collective behaviour of half-light half-matter


Dr Elena Ostrovskaya, Australian National University
This colloquium will be held in Parnell (07) 234 at 3 pm (to be confirmed).

Strong light-matter interactions in semiconductor microcavities give birth to exciton-polaritons – half-light half-matter quasiparticles. These quasiparticles can condense into a single macroscopically populated quantum state similar to a Bose-Einstein condensate (BEC) of ultracold atoms, and display collective quantum behaviour, such as superfluidity. By its nature, exciton-polariton condensate is an open, non-equilibrium quantum system that can be easily manipulated via optically induced and fabricated potentials. Apart from being an attractive test bed for fundamental studies of non-equilibrium and quantum physics, microcavity exciton-polaritons may find applications in the next-generation optoelectronic devices. I will give a general overview of the field, and talk about research conducted by the recently established Polariton BEC group at the Australian National University.

Dr Elena Ostrovskaya, ANU – Harnessing the collective behaviour of half-light half-matter from School of Mathematics & Physics on Vimeo.