Information processing with topologically protected vortex memories in exciton-polariton condensates

• Main Authors: Sigurdsson, H., Egorov, O. A., Ma, X., Shelykh, Ivan A., Liew, Timothy Chi Hin
• Other Authors: School of Physical and Mathematical Sciences
• Format: Article
• Language: English
• Published: 2014
• Subjects: DRNTU::Science::Physics
• Online Access: https://hdl.handle.net/10356/104704; http://hdl.handle.net/10220/20332
• Institution: Nanyang Technological University

We show that in a nonequilibrium system of an exciton-polariton condensate, where polaritons are generated from incoherent pumping, a ring-shaped pump allows for stationary vortex memory elements of topological charge m=1 or m=−1. Using simple potential guides we can choose whether to copy the same...