title: Injection of a single electron from static to moving quantum dots.
abstract: We study the injection mechanism of a single electron from a static quantum dot into a moving quantum dot. The moving quantum dots are created with surface acoustic waves (SAWs) in a long depleted channel. We demonstrate that the injection process is characterized by an activation law with a threshold that depends on the SAW amplitude and on the dot-channel potential gradient. By sufficiently increasing the SAW modulation amplitude, we can reach a regime where the transfer has unity probability and is potentially adiabatic. This study points to the relevant regime to use moving dots in quantum information protocols.
authors.affiliation: Univ. Grenoble Alpes, Inst NEEL, F-38042 Grenoble, France. CNRS, Inst NEEL, F-38042 Grenoble, France.
authors.forename: Benoit
authors.initials: B
authors.lastname: Bertrand
authors.forename: Sylvain
authors.initials: S
authors.lastname: Hermelin
authors.forename: Pierre-André
authors.initials: PA
authors.lastname: Mortemousque
authors.forename: Shintaro
authors.initials: S
authors.lastname: Takada
authors.forename: Michihisa
authors.initials: M
authors.lastname: Yamamoto
authors.forename: Seigo
authors.initials: S
authors.lastname: Tarucha
authors.forename: Arne
authors.initials: A
authors.lastname: Ludwig
authors.forename: Andreas D
authors.initials: AD
authors.lastname: Wieck
authors.forename: Christopher
authors.initials: C
authors.lastname: Bäuerle
authors.forename: Tristan
authors.initials: T
authors.lastname: Meunier