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Sound-driven single-electron transfer in a circuit of coupled quantum rails

Author

Listed:
  • Shintaro Takada

    (Université Grenoble Alpes, CNRS, Institut Néel
    National Institute of Advanced Industrial Science and Technology (AIST), National Metrology Institute of Japan (NMIJ))

  • Hermann Edlbauer

    (Université Grenoble Alpes, CNRS, Institut Néel)

  • Hugo V. Lepage

    (University of Cambridge)

  • Junliang Wang

    (Université Grenoble Alpes, CNRS, Institut Néel)

  • Pierre-André Mortemousque

    (Université Grenoble Alpes, CNRS, Institut Néel)

  • Giorgos Georgiou

    (Université Grenoble Alpes, CNRS, Institut Néel
    Université Savoie Mont-Blanc, CNRS, IMEP-LAHC)

  • Crispin H. W. Barnes

    (University of Cambridge)

  • Christopher J. B. Ford

    (University of Cambridge)

  • Mingyun Yuan

    (Paul-Drude-Institut für Festkörperelektronik)

  • Paulo V. Santos

    (Paul-Drude-Institut für Festkörperelektronik)

  • Xavier Waintal

    (Université Grenoble Alpes, CEA, IRIG-Pheliqs)

  • Arne Ludwig

    (Ruhr-Universität Bochum, Universitätsstraße 150)

  • Andreas D. Wieck

    (Ruhr-Universität Bochum, Universitätsstraße 150)

  • Matias Urdampilleta

    (Université Grenoble Alpes, CNRS, Institut Néel)

  • Tristan Meunier

    (Université Grenoble Alpes, CNRS, Institut Néel)

  • Christopher Bäuerle

    (Université Grenoble Alpes, CNRS, Institut Néel)

Abstract

Surface 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.

Suggested Citation

  • Shintaro Takada & Hermann Edlbauer & Hugo V. Lepage & Junliang Wang & Pierre-André Mortemousque & Giorgos Georgiou & Crispin H. W. Barnes & Christopher J. B. Ford & Mingyun Yuan & Paulo V. Santos & Xa, 2019. "Sound-driven single-electron transfer in a circuit of coupled quantum rails," Nature Communications, Nature, vol. 10(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:10:y:2019:i:1:d:10.1038_s41467-019-12514-w
    DOI: 10.1038/s41467-019-12514-w
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    Cited by:

    1. Ran Xue & Max Beer & Inga Seidler & Simon Humpohl & Jhih-Sian Tu & Stefan Trellenkamp & Tom Struck & Hendrik Bluhm & Lars R. Schreiber, 2024. "Si/SiGe QuBus for single electron information-processing devices with memory and micron-scale connectivity function," Nature Communications, Nature, vol. 15(1), pages 1-7, December.

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