title: Detuning-dependent Mollow triplet of a coherently-driven single quantum dot.
abstract: We present both experimental and theoretical investigations of a laser-driven quantum dot (QD) in the dressed-state regime of resonance fluorescence. We explore the role of phonon scattering and pure dephasing on the detuning-dependence of the Mollow triplet and show that the triplet sidebands may spectrally broaden or narrow with increasing detuning. Based on a polaron master equation approach, which includes electron-phonon interaction nonperturbatively, we derive a fully analytical expression for the spectrum. With respect to detuning dependence, we identify a crossover between the regimes of spectral sideband narrowing or broadening. We also predict regimes of phonon-induced squeezing and anti-squeezing of the spectral resonances. A comparison of the theoretical predictions to detailed experimental studies on the laser detuning-dependence of Mollow triplet resonance emission from single In(Ga)As QDs reveals excellent agreement.
authors.affiliation: Institut fur Halbleiteroptik und Funktionelle Grenzflachen, Allmandring 3, 70569 Stuttgart, Germany.
authors.forename: Ata
authors.initials: A
authors.lastname: Ulhaq
authors.forename: Stefanie
authors.initials: S
authors.lastname: Weiler
authors.forename: Chiranjeeb
authors.initials: C
authors.lastname: Roy
authors.forename: Sven Marcus
authors.initials: SM
authors.lastname: Ulrich
authors.forename: Michael
authors.initials: M
authors.lastname: Jetter
authors.forename: Stephen
authors.initials: S
authors.lastname: Hughes
authors.forename: Peter
authors.initials: P
authors.lastname: Michler
mesh_terms: D003198:Computer Simulation; D017076:Computer-Aided Design; D004735:Energy Transfer; D004867:Equipment Design; D019544:Equipment Failure Analysis; D007834:Lasers; D008962:Models, Theoretical; D045663:Quantum Dots