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

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External Research Organisations

  • Physikalisch-Technische Bundesanstalt PTB
  • Aalto University
  • Karlsruhe Institute of Technology (KIT)
  • Center for Quantum Computing

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Original languageEnglish
Article number046303
JournalPhysical review letters
Volume134
Issue number4
Publication statusPublished - 31 Jan 2025

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.

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Cite this

Real-Time Detection and Control of Correlated Charge Tunneling in a Quantum Dot. / Bayer, Johannes C.; Brange, Fredrik; Schmidt, Adrian et al.
In: Physical review letters, Vol. 134, No. 4, 046303, 31.01.2025.

Research output: Contribution to journalArticleResearchpeer review

Bayer JC, Brange F, Schmidt A, Wagner T, Rugeramigabo EP, Flindt C et al. Real-Time Detection and Control of Correlated Charge Tunneling in a Quantum Dot. Physical review letters. 2025 Jan 31;134(4):046303. doi: 10.1103/PhysRevLett.134.046303, 10.1103/PhysRevLett.134.046303
Bayer, Johannes C. ; Brange, Fredrik ; Schmidt, Adrian et al. / Real-Time Detection and Control of Correlated Charge Tunneling in a Quantum Dot. In: Physical review letters. 2025 ; Vol. 134, No. 4.
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AU - Brange, Fredrik

AU - Schmidt, Adrian

AU - Wagner, Timo

AU - Rugeramigabo, Eddy P.

AU - Flindt, Christian

AU - Haug, Rolf J.

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