Half-skyrmions with higher topological quantum numbers in homogeneous exciton-polariton condensates

Ting-Wei Chen^1*, Shih-Da Jheng², Szu-Cheng Cheng^2,3

¹Department of Electrophysics, National Chiayi University, Chiayi city, Taiwan
²Department of Optoelectric Physics, Chinese Culture University, Taipei city, Taiwan
³Quantum Computation and Information Center, Chinese Culture University, Taipei city, Taiwan

* Presenter:Ting-Wei Chen, email:twchen@mail.ncyu.edu.tw

We investigate the topological excitations of half-quantum vortices (HQVs) with higher topological quantum numbers in a homogeneous spinor exciton-polariton condensate. The spin texture and integrated topological charge can be controlled through the pump. Among these textures, the polaritonic half-skyrmions can be created with suitable excitation conditions. Moreover, when the pump polarization is in favor of the vortex component of the HQV, there is an inversion of circular polarization (spin-flipping) from the center of HQV towards the edge. The radial flipping position can be manipulated by the pump polarization or power.

Keywords: exciton polariton, skyrmion, vortices