CC BY 4.0 UnportedTakada, ShintaroEdlbauer, HermannLepage, Hugo V.Wang, JunliangMortemousque, Pierre-AndréGeorgiou, GiorgosBarnes, Crispin H. W.Ford, Christopher J. B.Yuan, MingyunSantos, Paulo V.Waintal, XavierLudwig, ArneWieck, Andreas D.Urdampilleta, MatiasMeunier, TristanBäuerle, Christopher2022-11-182022-11-182019https://oa.tib.eu/renate/handle/123456789/10354http://dx.doi.org/10.34657/9390Surface acoustic waves (SAWs) strongly modulate the shallow electric potential in piezoelectric materials. In semiconductor heterostructures such as GaAs/AlGaAs, SAWs can thus be employed to transfer individual electrons between distant quantum dots. This transfer mechanism makes SAW technologies a promising candidate to convey quantum information through a circuit of quantum logic gates. Here we present two essential building blocks of such a SAW-driven quantum circuit. First, we implement a directional coupler allowing to partition a flying electron arbitrarily into two paths of transportation. Second, we demonstrate a triggered single-electron source enabling synchronisation of the SAW-driven sending process. Exceeding a single-shot transfer efficiency of 99%, we show that a SAW-driven integrated circuit is feasible with single electrons on a large scale. Our results pave the way to perform quantum logic operations with flying electron qubits. © 2019, The Author(s).enghttps://creativecommons.org/licenses/by/4.0/500quantum dotacoustic waveelectrical conductivityelectronpiezoelectricityquantum mechanicsadiabaticityelectric potentialelectron transportscanning electron microscopysoundArticle