2s exciton-polariton revealed in an external magnetic field

B. Piętka, M. R. Molas, N. Bobrovska, M. Król, R. Mirek, K. Lekenta, P. Stępnicki, F. Morier-Genoud, J. Szczytko, B. Deveaud, M. Matuszewski, M. Potemski
2017 Physical review B  
We demonstrate the existence of the excited state of an exciton-polariton in a semiconductor microcavity. The strong coupling of the quantum well heavy-hole exciton in an excited 2s state to the cavity photon is observed in non-zero magnetic field due to surprisingly fast increase of Rabi energy of the 2s exciton-polariton in magnetic field. This effect is explained by a strong modification of the wave-function of the relative electron-hole motion for the 2s exciton state.
doi:10.1103/physrevb.96.081402 fatcat:safkkx3uqzhjbpqf452ut73m4e