Control of the Strong Light-Matter Interaction between an Elongated In0.3Ga0.7As Quantum Dot and a Micropillar Cavity Using External Magnetic Fields

S. Reitzenstein*, S. Muench, P. Franeck, A. Rahimi-Iman, A. Loeffler, Sven Höfling, L. Worschech, A. Forchel

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

73 Citations (Scopus)

Abstract

We have studied a strongly coupled quantum dot-micropillar cavity system subject to an external magnetic field. The large diamagnetic response of elongated In0.3Ga0.7As quantum dots is exploited to demonstrate magneto-optical resonance tuning in the strong coupling regime. Furthermore, the magnetic field provides an additional degree of freedom to in situ manipulate the coupling constant. A transition from strong coupling towards the critical coupling regime is attributed to a reduction of the quantum dot oscillator strength when the magnetic confinement becomes significant with regards to the exciton confinement above 3 T.

Original languageEnglish
Article number127401
Number of pages4
JournalPhysical Review Letters
Volume103
Issue number12
DOIs
Publication statusPublished - 18 Sept 2009

Keywords

  • NANOSTRUCTURES
  • MICROCAVITY

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