Single quantum dot photocurrent spectroscopy in the cavity quantum electrodynamics regime

P. Gold*, M. Gschrey, C. Schneider, Sven Höfling, A. Forchel, M. Kamp, S. Reitzenstein

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

We study cavity quantum electrodynamics (cQED) in coupled quantum dot-microcavity systems under electrical readout. Strict resonant excitation of a target quantum dot (QD) allows us to monitor the photocurrent response of a single emitter in the quantum limit of light-matter interaction. We find a strong anticorrelation between radiative recombination and nonradiative tunnel escape of photoexcited carries which can be controlled by cQED effects in the Purcell regime. In fact, cavity-enhanced radiative emission from a QD results in a weaker photocurrent signal which reflects the cQED controlled competition between radiative and nonradiative recombination at the single emitter level.

Original languageEnglish
Article number161301
Number of pages4
JournalPhysical Review. B, Condensed matter and materials physics
Volume86
Issue number16
DOIs
Publication statusPublished - 1 Oct 2012

Keywords

  • MICROCAVITIES
  • SYSTEM

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