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A quantum memory intrinsic to single nitrogen–vacancy centres in diamond

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2011

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Fuchs, Greg
Klimov, Paul
Awschalom, David

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http://nbn-resolving.de/urn:nbn:de:bsz:352-191595
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https://doi.org/10.1038/nphys2026
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Nature Physics. 2011, 7(10), pp. 789-793. ISSN 1745-2473. Available under: doi: 10.1038/nphys2026

Zusammenfassung

A quantum memory, composed of a long-lived qubit coupled to each processing qubit, is important to building a scalable platform for quantum information science. These two qubits should be connected by a fast and high-fidelity operation to store and retrieve coherent quantum states. Here, we demonstrate a room-temperature quantum memory based on the spin of the nitrogen nucleus intrinsic to each nitrogen–vacancy (NV) centre in diamond. We perform coherent storage of a single NV centre electronic spin in a single nitrogen nuclear spin using Landau–Zener transitions across a hyperfine-mediated avoided level crossing. By working outside the asymptotic regime, we demonstrate coherent state transfer in as little as 120 ns with total storage fidelity of 88±6%. This work demonstrates the use of a quantum memory that is compatible with scaling as the nitrogen nucleus is deterministically present in each NV centre defect.

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530 Physik

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quantum physics, electronics, photonics and device physics

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ISO 690FUCHS, Greg, Guido BURKARD, Paul KLIMOV, David AWSCHALOM, 2011. A quantum memory intrinsic to single nitrogen–vacancy centres in diamond. In: Nature Physics. 2011, 7(10), pp. 789-793. ISSN 1745-2473. Available under: doi: 10.1038/nphys2026
BibTex
@article{Fuchs2011quant-19159,
  year={2011},
  doi={10.1038/nphys2026},
  title={A quantum memory intrinsic to single nitrogen–vacancy centres in diamond},
  number={10},
  volume={7},
  issn={1745-2473},
  journal={Nature Physics},
  pages={789--793},
  author={Fuchs, Greg and Burkard, Guido and Klimov, Paul and Awschalom, David}
}
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