title: Harvesting, Coupling, and Control of Single-Exciton Coherences in Photonic Waveguide Antennas.
abstract: We perform coherent nonlinear spectroscopy of individual excitons strongly confined in single InAs quantum dots (QDs). The retrieval of their intrinsically weak four-wave mixing (FWM) response is enabled by a one-dimensional dielectric waveguide antenna. Compared to a similar QD embedded in bulk media, the FWM detection sensitivity is enhanced by up to 4 orders of magnitude, over a broad operation bandwidth. Three-beam FWM is employed to investigate coherence and population dynamics within individual QD transitions. We retrieve their homogenous dephasing in a presence of low-frequency spectral wandering. Two-dimensional FWM reveals off-resonant Förster coupling between a pair of distinct QDs embedded in the antenna. We also detect a higher order QD nonlinearity (six-wave mixing) and use it to coherently control the FWM transient. Waveguide antennas enable us to conceive multicolor coherent manipulation schemes of individual emitters.
authors.affiliation: Univ. Grenoble Alpes, F-38000 Grenoble, France.|CNRS, Institut Néel, "Nanophysique et semiconducteurs" group, F-38000 Grenoble, France.
authors.forename: Q
authors.initials: Q
authors.lastname: Mermillod
authors.affiliation: Univ. Grenoble Alpes, F-38000 Grenoble, France.|CNRS, Institut Néel, "Nanophysique et semiconducteurs" group, F-38000 Grenoble, France.
authors.forename: T
authors.initials: T
authors.lastname: Jakubczyk
authors.affiliation: Univ. Grenoble Alpes, F-38000 Grenoble, France.|CNRS, Institut Néel, "Nanophysique et semiconducteurs" group, F-38000 Grenoble, France.
authors.forename: V
authors.initials: V
authors.lastname: Delmonte
authors.affiliation: Univ. Grenoble Alpes, F-38000 Grenoble, France.|CEA, INAC-PHELIQS, "Nanophysique et semiconducteurs" group, F-38000 Grenoble, France.
authors.forename: A
authors.initials: A
authors.lastname: Delga
authors.affiliation: Univ. Grenoble Alpes, F-38000 Grenoble, France.|CEA, INAC-PHELIQS, "Nanophysique et semiconducteurs" group, F-38000 Grenoble, France.
authors.forename: E
authors.initials: E
authors.lastname: Peinke
authors.affiliation: Univ. Grenoble Alpes, F-38000 Grenoble, France.|CEA, INAC-PHELIQS, "Nanophysique et semiconducteurs" group, F-38000 Grenoble, France.
authors.forename: J-M
authors.initials: JM
authors.lastname: Gérard
authors.affiliation: Univ. Grenoble Alpes, F-38000 Grenoble, France.|CEA, INAC-PHELIQS, "Nanophysique et semiconducteurs" group, F-38000 Grenoble, France.
authors.forename: J
authors.initials: J
authors.lastname: Claudon
authors.affiliation: Univ. Grenoble Alpes, F-38000 Grenoble, France.|CNRS, Institut Néel, "Nanophysique et semiconducteurs" group, F-38000 Grenoble, France.
authors.forename: J
authors.initials: J
authors.lastname: Kasprzak