Exciton spin state mediated photon-photon coupling in a strongly coupled quantum dot microcavity system

S. Reitzenstein*, S. Muench, P. Franeck, A. Loeffler, Sven Höfling, L. Worschech, A. Forchel, I. V. Ponomarev, T. L. Reinecke

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

29 Citations (Scopus)

Abstract

Semiconductor microcavities play a key role in connecting exciton states and photons in advancing quantum information in solids. In this work we report on coherent interaction between high quality microcavity photon modes and spin states of a quantum dot in the strong coupling regime of cavity quantum electrodynamics. The coupling between the photon and exciton modes is studied by varying the temperature, where the spin states are resolved with a magnetic field applied in Faraday configuration. A detailed oscillator model is used to extract coupling parameters of the individual spin and cavity modes, which shows that the coupling depends on features of the mode symmetries. Our results demonstrate an effective coupling between photon modes that is mediated by the exciton spin states.

Original languageEnglish
Article number121306
Number of pages4
JournalPhysical Review. B, Condensed matter and materials physics
Volume82
Issue number12
DOIs
Publication statusPublished - 16 Sept 2010

Keywords

  • CAVITY

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