Microcavity polaritons are quasi-particles composed of cavity photons and excitons in semiconductor microcavities. The polariton-polariton interaction gives rise to strong nonlinearity that results in rich nonlinear phenomena such as formation of solitons, optical bistability, modulational instability, and vortices. A vortex carrying a quantized topological charge can be regarded as a binary information carrier which has potential application in information processing. We explore novel nonlinear phenomena of polaritons in the presence of lattices and including the pseudospin degree of freedom.
- Realization of all-optical vortex switching in exciton-polariton condensates
X. Ma, B. Berger, M. Aßmann, R. Driben, T. Meier, C. Schneider, S. Höfling, and S. Schumacher, Nat. Commun. 11, 897 (2020).
- Circular polarization reversal of half-vortex cores in polariton condensates
M. Pukrop, S. Schumacher, and X. Ma, Phys. Rev. B 101, 205301 (2020).
- Vortex Multistability and Bessel Vortices in Polariton Condensates
X. Ma and S. Schumacher, Phys. Rev. Lett. 121, 227404 (2018).
- Creation and Manipulation of Stable Dark Solitons and Vortices in Microcavity Polariton Condensates
X. Ma, O. A. Egorov, and S. Schumacher, Phys. Rev. Lett. 118, 157401 (2017).