Vacuum Rabi splitting with a single quantum dot in a photonic crystal nanocavity

T. Yoshle, A. Scherer, J. Hendrickson, G. Khitrova, H. M. Gibbs, G. Rupper, C. Ell, O. B. Shchekin, D. G. Deppe

Research output: Contribution to journalArticle

1750 Scopus citations

Abstract

Cavity quantum electrodynamics (QED) systems allow the study of a variety of fundamental quantum-optics phenomena, such as entanglement, quantum decoherence and the quantum-classical boundary. Such systems also provide test beds for quantum information science. Nearly all strongly coupled cavity QED experiments have used a single atom in a high-quality-factor (high-Q) cavity. Here we report the experimental realization of a strongly coupled system in the solid state: a single quantum dot embedded in the spacer of a nanocavity, showing vacuum-field Rabi splitting exceeding the decoherence linewidths of both the nanocavity and the quantum dot. This requires a small-volume cavity and an atomic-like two-level system. The photonic crystal slab nanocavity-which traps photons when a defect is introduced inside the two-dimensional photonic bandgap by leaving out one or more holes-has both high Q and small modal volume V, as required for strong light-matter interactions. The quantum dot has two discrete energy levels with a transition dipole moment much larger than that of an atom, and it is fixed in the nanocavity during growth.

Original languageEnglish (US)
Pages (from-to)200-203
Number of pages4
JournalNature
Volume432
Issue number7014
DOIs
StatePublished - Nov 11 2004

ASJC Scopus subject areas

  • General

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    Yoshle, T., Scherer, A., Hendrickson, J., Khitrova, G., Gibbs, H. M., Rupper, G., Ell, C., Shchekin, O. B., & Deppe, D. G. (2004). Vacuum Rabi splitting with a single quantum dot in a photonic crystal nanocavity. Nature, 432(7014), 200-203. https://doi.org/10.1038/nature03119