Multidimensional coherent spectroscopy of a semiconductor microcavity

Brian L. Wilmer, Felix Passmann, Michael Gehl, Galina Khitrova, Alan D. Bristow

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations


Multidimensional coherent spectroscopy maps the detuning dependence of the upper (UP) and lower (LP) excitonpolariton branches1 in a wedged microcavity with a single InGaAs quantum well at 5 K. Features on the diagonal correspond to intra-action coherences of the UP and LP branches. Off-diagonal peaks are interaction coherences between the UP and LP branches. With increasing detuning (Δ), all peaks move to higher energy, the exciton-like (EEX) and cavity-like (Eγ) modes swap position and have maximum intensity near the anti-crossing at Δ=0. An isolated biexciton (B) is only seen at Δ<0, separated by a binding energy of approximately 2 meV. For Δ>0, the spectral weight of the off-diagonal features swap, as the LP and B come into resonance. This indicates that the off-diagonal features are sensitive to the interactions including two-quantum contributions and that a situation similar to a Feshbach resonance exists.2 Polarization of two-quantum contributions show spin sensitive two-polariton and new biexciton correlations. The latter likely influence the Feshbach resonance between biexcitons and two-polariton states. The two-quantum signatures also demonstate that biexcitons perturb the light-matter coupling in the microcavity to reduce the mixed two-polariton contributions. Detuning dependence of zero-quantum contributions show Raman-like coherences that are enhanced near zero detuning. Asymmetry of the Raman coherences are indicative of many-body interactions, which also grow stronger as the light-matter interactions are enhanced near zero deuning.

Original languageEnglish (US)
Title of host publicationUltrafast Phenomena and Nanophotonics XX
EditorsAbdulhakem Y. Elezzabi, Markus Betz
ISBN (Electronic)9781628419818
StatePublished - 2016
EventUltrafast Phenomena and Nanophotonics XX - San Francisco, United States
Duration: Feb 15 2016Feb 18 2016

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X


OtherUltrafast Phenomena and Nanophotonics XX
Country/TerritoryUnited States
CitySan Francisco


  • Coherent Spectroscopy
  • Excitons
  • Microcavities
  • Polaritons

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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