Zeeman splitting and diamagnetic shift of spatially confined quantum-well exciton polaritons in an external magnetic field

A. Rahimi-Iman*, C. Schneider, J. Fischer, S. Holzinger, M. Amthor, Sven Höfling, S. Reitzenstein, L. Worschech, M. Kamp, A. Forchel

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

31 Citations (Scopus)

Abstract

We report on pronounced magneto-optical effects of spatially confined polariton modes in an InGaAs quantum-well microcavity. The polaritons were trapped by a lithographically modulated cavity length. In contrast to etched structures suffering from nonradiative recombination, this approach allows for a gentle modification of the dielectric properties and results in a confinement potential of 7.5 meV. In the presence of an external magnetic field, a diamagnetic shift and Zeeman splitting of the quantized modes were observed for different trap diameters, ranging from 1 to 10 mu m. This confirms that the polaritonic properties of the emission modes are preserved even for small traps. Moreover, a clear correlation between the magnetic response and the excitonic fraction of the polaritons was identified by magnetic field-dependent measurements.

Original languageEnglish
Article number165325
Number of pages7
JournalPhysical Review. B, Condensed matter and materials physics
Volume84
Issue number16
DOIs
Publication statusPublished - 24 Oct 2011

Keywords

  • BOSE-EINSTEIN CONDENSATION
  • MICROCAVITY
  • ENHANCEMENT
  • DOTS

Fingerprint

Dive into the research topics of 'Zeeman splitting and diamagnetic shift of spatially confined quantum-well exciton polaritons in an external magnetic field'. Together they form a unique fingerprint.

Cite this