Coulomb sensing of single ballistic electrons

Autor:	Fletcher, J. D., Park, W., See, P., Griffiths, J. P., Jones, G. A. C., Farrer, I., Ritchie, D. A., Sim, H. -S., Kataoka, M.
Rok vydání:	2024
Předmět:	Condensed Matter - Mesoscale and Nanoscale Physics Quantum Physics
Druh dokumentu:	Working Paper
Popis:	While ballistic electrons are a key tool for applications in sensing and flying qubits, sub-nanosecond propagation times and complicated interactions make control of ballistic single electrons challenging. Recent experiments have revealed Coulomb collisions of counterpropagating electrons in a beam splitter, giving time resolved control of interactions between single electrons. Here we use remote Coulomb interactions to demonstrate a scheme for sensing single ballistic electrons. We show that interactions are highly controllable via electron energy and emission timing. We use a weakly-coupled `sensing' regime to characterise the nanoscale potential landscape of the beam splitter and the strength of the Coulomb interaction, and show multi-electron sensing with picosecond resolution. Comment: 6 pages, 5 figures (main) + 11 pages, 10 figures (supplementary)
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2412.15789 Zobrazit plný text záznamu View this record from Arxiv