Ultrafast control of strong light-matter coupling

Christoph Lange, Emiliano Cancellieri, Dmitry Panna, David M. Whittaker, Mark Steger, David W. Snoke, Loren N. Pfeiffer, Kenneth W. West, Alex Hayat

Research output: Contribution to journalArticlepeer-review

5 Scopus citations


We dynamically modulate strong light-matter coupling in a GaAs/AlGaAs microcavity using intense ultrashort laser pulses tuned below the interband exciton energy, which induce a transient Stark shift of the cavity polaritons. For 225-fs pulses, shorter than the cavity Rabi cycle period of 1000 fs, this shift decouples excitons and cavity photons for the duration of the pulse, interrupting the periodic energy exchange between photonic and electronic states. For 1500-fs pulses, longer than the Rabi cycle period, however, the Stark shift does not affect the strong coupling. The two regimes are marked by distinctly different line shapes in ultrafast reflectivity measurements - regardless of the Stark field intensity. The crossover marks the transition from adiabatic to diabatic switching of strong light-matter coupling.

Original languageEnglish (US)
Article number013032
JournalNew Journal of Physics
Issue number1
StatePublished - Jan 2018
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy


  • dynamic Stark effect
  • exciton-polaritons
  • strong light-matter coupling
  • ultrafast control


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