Suppression of Zeeman Splitting of the Energy Levels of Exciton-Polariton Condensates in Semiconductor Microcavities in an External Magnetic Field

• Main Authors: Walker, P., Liew, Timothy Chi Hin, Sarkar, D., Durska, M., Love, A. P. D., Skolnick, M. S., Roberts, J. S., Shelykh, I. A., Kavokin, A. V., Krizhanovskii, D. N.
• Other Authors: School of Physical and Mathematical Sciences
• Format: Article
• Language: English
• Published: 2017
• Subjects: Polariton; Zeeman Splitting
• Online Access: https://hdl.handle.net/10356/85855; http://hdl.handle.net/10220/43897
• Institution: Nanyang Technological University

A key property of equilibrium exciton-polariton condensates in semiconductor microcavities is the suppression of the Zeeman splitting under a magnetic field. By studying magnetophotoluminescence spectra from a GaAs microcavity, we show experimentally that a similar effect occurs in a nonequilibrium polariton condensate arising from polariton parametric scattering. In this case, the quenching of Zeeman splitting is related to a phase synchronization of spin-up and spin-down polarized polariton condensates caused by a nonlinear coupling via the coherent pump state.