Quantum interface of an electron and a nuclear ensemble

Research output: Contribution to journalJournal article – Annual report year: 2019Researchpeer-review

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  • Author: Gangloff, D. A.

    University of Cambridge, United Kingdom

  • Author: Éthier-Majcher, G.

    University of Cambridge, United Kingdom

  • Author: Lang, C.

    University of Cambridge, United Kingdom

  • Author: Denning, E. V.

    Department of Photonics Engineering, Technical University of Denmark, Ørsteds Plads, 2800, Kgs. Lyngby, Denmark

  • Author: Bodey, J. H.

    University of Cambridge, United Kingdom

  • Author: Jackson, D. M.

    University of Cambridge, United Kingdom

  • Author: Clarke, M.E.

    University of Sheffield, United Kingdom

  • Author: Hugues, M.

    CNRS, France

  • Author: Gall, C. Le

    University of Cambridge, United Kingdom

  • Author: Atatüre, Mete

    University of Cambridge, United Kingdom

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Coherent excitation of an ensemble of quantum objects underpins quantum many-body phenomena and offers the opportunity to realize a memory that stores quantum information. Thus far, a deterministic and coherent interface between a spin qubit and such an ensemble has remained elusive. Here, we first use an electron to cool the mesoscopic nuclear-spin ensemble of a semiconductor quantum dot to the nuclear sideband–resolved regime. We then implement an all-optical approach to access individual quantized electronic-nuclear spin transitions. Finally, we perform coherent optical rotations of a single collective nuclear spin excitation—a spin wave. These results constitute the building blocks of a dedicated local memory per quantum-dot spin qubit and promise a solid-state platform for quantum-state engineering of isolated many-body systems.

Original languageEnglish
JournalScience
Volume364
Issue number6435
Pages (from-to)62-66
Number of pages5
ISSN0036-8075
DOIs
Publication statusPublished - 2019
CitationsWeb of Science® Times Cited: No match on DOI

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