title: High purcell factor due to coupling of a single emitter to a dielectric slot waveguide.
abstract: We demonstrate an all-dielectric quantum electrodynamical nanowire-slab system with a single emitter that concentrates the extremely intense light at the scale of 10 × 75 nm(2). The quantum dot exhibits a record high 31-fold spontaneous decay rate enhancement, its optical saturation and blinking are strongly suppressed, and 80% of emission couples into a waveguide mode.
authors.affiliation: NSF Nanoscale Science and Engineering Center (NSEC), University of California , 3112 Etcheverry Hall, Berkeley, California 94720, United States.
authors.forename: Pavel
authors.initials: P
authors.lastname: Kolchin
authors.forename: Nitipat
authors.initials: N
authors.lastname: Pholchai
authors.forename: Maiken H
authors.initials: MH
authors.lastname: Mikkelsen
authors.forename: Jinyong
authors.initials: J
authors.lastname: Oh
authors.forename: Sadao
authors.initials: S
authors.lastname: Ota
authors.forename: M Saif
authors.initials: MS
authors.lastname: Islam
authors.forename: Xiaobo
authors.initials: X
authors.lastname: Yin
authors.forename: Xiang
authors.initials: X
authors.lastname: Zhang
keywords: Nanophotonics; all-dielectric waveguide; deep subwavelength light confinement; emission coupling; field enhancement; quantum dot; waveguide QED