Nonlinear phenomena, such as vortices and solitons, in microcavity exciton-polaritons represent intriguing behaviors that hold promise for applications in all-optical circuits, information processing, and quantum computing. We have reviewed the formation and control dynamics of polariton vortices and solitons, with a focus on spinor polaritons in which vortices with a half-integer topological charge can arise. This review has been recently…
Our project "PT-symmetry and non-Hermitian physics in polariton condensates in semiconductor microcavities" has been successfully extended by DFG, i.e., "Engineering non-Hermitian Hamiltonians in nonlinear exciton-polariton systems".
To control polariton condensates by using electric fields is a big challenge, since they are electrically neutral quasi-particles. We found that in a liquid-crystal filled microcavity where CsPbBr3 perovskite microplates act as the gain material, an applied electric field can tune the cavity modes by changing the anisotropy of the liquid crystal and further trigger the optical Rashba-Dresselhaus effect, leading to the splitting of the condensed…
