2s exciton-polariton revealed in an external magnetic field
B. Pietka, M. R. Molas, N. Bobrovska, M. Krol, R. Mirek, K. Lekenta,, P. Stepnicki, F. Morier-Genoud, J. Szczytko, B. Deveaud, M. Matuszewski, M., Potemski
TL;DR
This paper reports the experimental observation of the 2s excited state of an exciton-polariton in a semiconductor microcavity, showing how magnetic fields enhance the coupling strength due to wave-function modifications.
Contribution
It provides the first demonstration of the 2s exciton-polariton state and explains its magnetic field dependence through wave-function analysis.
Findings
Observation of 2s exciton-polariton in a magnetic field
Rapid increase of Rabi energy with magnetic field
Modification of electron-hole wave-function in 2s state
Abstract
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.
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Taxonomy
TopicsStrong Light-Matter Interactions · Mechanical and Optical Resonators