Tuning polariton vortices in an asymmetric ring potential
Abstract
Exciton polariton condensates are macroscopic coherent states in which topological excitations can be observed. In this work, we observe the excitation of the vortices and realize tuning the topological charge by manipulating the pumping configurations. Using a digital micromirror device, we constructed an annular pumping pattern where the inner and outer rings can be easily tuned. Both the number and the topological charge of the vortices can be changed by slightly tuning the inner ring position against the outer ring. The experimental results can be reproduced in theory by the Gross–Pitaevskii equation. Our work offers to generate and manipulate vortices in exciton polariton condensates using a straightforward optical method.
Article Details
Journal Info
Applied Physics Letters
American Institute of Physics
Authors (16)
Qiang Ai
Xuekai Ma
Department of Physics and Center for Optoelectronics and Photonics Paderborn (CeOPP), Paderborn University, Warburger Strasse 100, Paderborn 33098, Germany
Franziska Barkhausen
Department of Physics and Center for Optoelectronics and Photonics Paderborn (CeOPP), Paderborn University 2 , Warburger Straße 100, 33098 Paderborn,
Xiaokun Zhai
Department of Physics, School of Science, Tianjin University 1 , Tianjin 300072,
Chunzi Xing
Department of Physics, School of Science, Tianjin University 1 , Tianjin 300072,
Xinmiao Yang
Department of Physics, School of Science, Tianjin University 1 , Tianjin 300072,
Peilin Wang
Tianyu Liu
International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of Education, Institute of Microscale Optoelectronics
Yong Zhang
Yazhou Gu
State Key Laboratory of Information Photonics and Optical Communications, School of Science, Beijing University of Posts and Telecommunications 5 , Beijing 100876,
Peigang Li
School of Integrated Circuits & State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications 6 , Beijing 100876,
Zhitong Li
Zacharias Hatzopoulos
Institute of Electronic Structure and Laser (IESL), Foundation for Research and Technology-Hellas (FORTH) 7
Pavlos G. Savvidis
Department of Physics, School of Science, Westlake University, Hangzhou 310014 8 ,
Stefan Schumacher
Tingge Gao
Department of Physics, School of Science, Tianjin University 1 , Tianjin 300072,