Propagating Wave Packets and Quantized Currents in Coherently Driven Polariton Superfluids
Propagating Wave Packets and Quantized Currents in Coherently Driven Polariton Superfluids
We study the properties of propagating polariton wave packets and their connection to the stability of doubly charged vortices. Wave-packet propagation and related photoluminescence spectra exhibit a rich behavior dependent on the excitation regime. We show that, because of the nonquadratic polariton dispersion, doubly charged vortices are stable only when …