Magnetic-field interaction of spatially confined quantum-well exciton-polaritons

We report on pronounced magneto-optical effects of trapped polariton modes in a single InGaAs quantum well microresonator with a lithographically defined modulation of the cavity length. In our optical polariton traps with diameters ranging from 1 to 10 μm, a confinement potential of 7.5 meV is achi...

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Bibliographic Details
Published in:Journal of physics. Conference series 2013-01, Vol.456 (1), p.12033-6
Main Authors: Rahimi-Iman, A, Schneider, C, Fischer, J, Holzinger, S, Amthor, M, Worschech, L, Reitzenstein, S, Höfling, S, Forchel, A, Kamp, M
Format: Article
Language:English
Subjects:
Confinement
Diamagnetism
Emission
Excitation
Excitons
Holes
Modulation
Particulate composites
Physics
Polaritons
Quantum wells
Zeeman effect
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Summary:We report on pronounced magneto-optical effects of trapped polariton modes in a single InGaAs quantum well microresonator with a lithographically defined modulation of the cavity length. In our optical polariton traps with diameters ranging from 1 to 10 μm, a confinement potential of 7.5 meV is achieved. In magnetic-field dependent experiments, a diamagnetic shift and a Zeeman splitting of the trap-modes are observed which confirms that the polaritonic nature of the quantized emission modes are preserved even for traps as small as 1 μm. Furthermore, focusing on theoretical estimates using a simple model, we have identified a clear correlation between the polaritons' magnetic response and their excitonic fraction, corresponding to the Hopfield coefficients of the composite particles.
ISSN:1742-6596
1742-6588
1742-6596
DOI:10.1088/1742-6596/456/1/012033