Effect of magnetic field on the lasing threshold of a semimagnetic polariton condensate

Abstract

We evidence magnetic field triggered polariton lasing in a microcavity containing semimagnetic quantum wells. This effect is associated with a decrease of the polariton lasing threshold power in magnetic field. The observed magnetic field dependence of the threshold power systematically exhibits a minimum which only weakly depends on the zero-field photon-exciton detuning. These results are interpreted as a consequence of the polariton giant Zeeman splitting which in magnetic field: leads to a decrease of the number of accessible states in the lowest polariton branch by a factor of two, and substantially changes the photon-exciton detuning.

5 pages, 4 figures

References in corpus (3)

• Magnetization dynamics down to zero field in dilute (Cd,Mn)Te quantum wells
• Angular dependence of giant Zeeman effect for semi-magnetic cavity polaritons
• Angle Dependence of Photonic Enhancement of Magneto-Optical Kerr Effect in DMS Layers

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• Occupancy-driven Zeeman suppression and inversion in trapped polariton condensates
• Magneto-optical induced supermode switching in quantum fluids of light
• Long-Distance Coupling and Energy Transfer between Exciton States in Magnetically Controlled Microcavities