title: Emission spectrum of a dressed exciton-biexciton complex in a semiconductor quantum dot.
abstract: The photoluminescence spectrum of a single quantum dot was recorded as a secondary resonant laser optically dressed either the vacuum-to-exciton or the exciton-to-biexciton transitions. High-resolution polarization-resolved measurements using a scanning Fabry-Pérot interferometer reveal splittings of the linearly polarized fine-structure states that are nondegenerate in an asymmetric quantum dot. These splittings manifest as either triplets or doublets and depend sensitively on laser intensity and detuning. Our approach realizes complete resonant control of a multiexcitonic system in emission, which can be either pulsed or continuous wave, and offers direct access to the emitted photons.
authors.affiliation: Joint Quantum Institute, National Institute of Standards and Technology and University of Maryland, Gaithersburg, Maryland 20899, USA. andreas.muller@nist.gov
authors.forename: Andreas
authors.initials: A
authors.lastname: Muller
authors.forename: Wei
authors.initials: W
authors.lastname: Fang
authors.forename: John
authors.initials: J
authors.lastname: Lawall
authors.forename: Glenn S
authors.initials: GS
authors.lastname: Solomon