title: Observation of phase-sensitive temporal correlations in the resonance fluorescence from two-level atoms.
abstract: We have made what we believe is the first observation of phase-dependent temporal correlations in the fluorescent field emitted by coherently driven two-level atoms in free space. We measured the temporal fluctuations of the fluorescent field when the resonant driving field was in phase and out of phase with the local-oscillator field.
authors.affiliation: Department of Physics, Duke University, Durham, North Carolina 27708-0305, USA.
authors.forename: Z H
authors.initials: ZH
authors.lastname: Lu
authors.forename: J E
authors.initials: JE
authors.lastname: Thomas
authors.forename: S
authors.initials: S
authors.lastname: Bali