Real-Time Detection and Control of Correlated Charge Tunneling in a Quantum Dot

verfasst von: Johannes C. Bayer, Fredrik Brange, Adrian Schmidt, Timo Wagner, Eddy P. Rugeramigabo, Christian Flindt, Rolf J. Haug
Abstract: We experimentally demonstrate the real-Time detection and control of correlated charge tunneling in a dynamically driven quantum dot. Specifically, we measure the joint distribution of waiting times between tunneling charges and show that the waiting times for holes may be strongly correlated due to the periodic drive and the Coulomb interactions on the dot, although the electron waiting times are not. Our measurements are in excellent agreement with a theoretical model that allows us to develop a detailed understanding of the correlated tunneling events. We also demonstrate that the degree of correlations can be controlled by the drive. Our experiment paves the way for systematic real-Time investigations of correlated electron transport in low-dimensional nanostructures.
Organisationseinheit(en): Institut für Festkörperphysik
Externe Organisation(en): Physikalisch-Technische Bundesanstalt (PTB)
Aalto University
Karlsruher Institut für Technologie (KIT)
Center for Quantum Computing
Typ: Artikel
Journal: Physical review letters
Band: 134
ISSN: 0031-9007
Publikationsdatum: 31.01.2025
Publikationsstatus: Veröffentlicht
Peer-reviewed: Ja
ASJC Scopus Sachgebiete: Allgemeine Physik und Astronomie
Elektronische Version(en): https://doi.org/10.1103/PhysRevLett.134.046303 (Zugang: Offen)
https://doi.org/10.1103/PhysRevLett.134.046303 (Zugang: Geschlossen)

BibTeX

@article{c58954fb304349f489706ee1978f3e30,
title = "Real-Time Detection and Control of Correlated Charge Tunneling in a Quantum Dot",
abstract = "We experimentally demonstrate the real-Time detection and control of correlated charge tunneling in a dynamically driven quantum dot. Specifically, we measure the joint distribution of waiting times between tunneling charges and show that the waiting times for holes may be strongly correlated due to the periodic drive and the Coulomb interactions on the dot, although the electron waiting times are not. Our measurements are in excellent agreement with a theoretical model that allows us to develop a detailed understanding of the correlated tunneling events. We also demonstrate that the degree of correlations can be controlled by the drive. Our experiment paves the way for systematic real-Time investigations of correlated electron transport in low-dimensional nanostructures.",
author = "Bayer, {Johannes C.} and Fredrik Brange and Adrian Schmidt and Timo Wagner and Rugeramigabo, {Eddy P.} and Christian Flindt and Haug, {Rolf J.}",
note = "Publisher Copyright: {\textcopyright} 2025 American Physical Society.",
year = "2025",
month = jan,
day = "31",
doi = "10.1103/PhysRevLett.134.046303",
language = "English",
volume = "134",
journal = "Physical review letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "4",
}