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Charge state manipulation of qubits in diamond

Author

Listed:
  • Bernhard Grotz

    (3. Physikalisches Institut and SCoPE, Universität Stuttgart)

  • Moritz V. Hauf

    (Walter Schottky Institut, Technische Universität München)

  • Markus Dankerl

    (Walter Schottky Institut, Technische Universität München)

  • Boris Naydenov

    (Institut für Quantenoptik, Universität Ulm)

  • Sébastien Pezzagna

    (RUBION, Ruhr-Universität Bochum)

  • Jan Meijer

    (RUBION, Ruhr-Universität Bochum)

  • Fedor Jelezko

    (Institut für Quantenoptik, Universität Ulm)

  • Jörg Wrachtrup

    (3. Physikalisches Institut and SCoPE, Universität Stuttgart)

  • Martin Stutzmann

    (Walter Schottky Institut, Technische Universität München)

  • Friedemann Reinhard

    (3. Physikalisches Institut and SCoPE, Universität Stuttgart)

  • Jose A. Garrido

    (Walter Schottky Institut, Technische Universität München)

Abstract

The nitrogen-vacancy (NV) centre in diamond is a promising candidate for a solid-state qubit. However, its charge state is known to be unstable, discharging from the qubit state NV− into the neutral state NV0 under various circumstances. Here we demonstrate that the charge state can be controlled by an electrolytic gate electrode. This way, single centres can be switched from an unknown non-fluorescent state into the neutral charge state NV0, and the population of an ensemble of centres can be shifted from NV0 to NV−. Numerical simulations confirm the manipulation of the charge state to be induced by the gate-controlled shift of the Fermi level at the diamond surface. This result opens the way to a dynamic control of transitions between charge states and to explore hitherto inaccessible states, such as NV+.

Suggested Citation

  • Bernhard Grotz & Moritz V. Hauf & Markus Dankerl & Boris Naydenov & Sébastien Pezzagna & Jan Meijer & Fedor Jelezko & Jörg Wrachtrup & Martin Stutzmann & Friedemann Reinhard & Jose A. Garrido, 2012. "Charge state manipulation of qubits in diamond," Nature Communications, Nature, vol. 3(1), pages 1-6, January.
    • Handle: RePEc:nat:natcom:v:3:y:2012:i:1:d:10.1038_ncomms1729
    DOI: 10.1038/ncomms1729
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    Cited by:

    1. Hodaka Kurokawa & Keidai Wakamatsu & Shintaro Nakazato & Toshiharu Makino & Hiromitsu Kato & Yuhei Sekiguchi & Hideo Kosaka, 2024. "Coherent electric field control of orbital state of a neutral nitrogen-vacancy center," Nature Communications, Nature, vol. 15(1), pages 1-7, December.
    2. Ruotian Gong & Guanghui He & Xingyu Gao & Peng Ju & Zhongyuan Liu & Bingtian Ye & Erik A. Henriksen & Tongcang Li & Chong Zu, 2023. "Coherent dynamics of strongly interacting electronic spin defects in hexagonal boron nitride," Nature Communications, Nature, vol. 14(1), pages 1-10, December.

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