Quantum control and entanglement of 6+ spin qubits in diamond

ORAL

Abstract

The nitrogen vacancy (NV) centre in diamond is a promising candidate for quantum networks. NVs can be entangled remotely [1], and coupling to 13C nuclear spins in the environment provides qubits for the storage and processing of quantum information [2]. In recent years, basic building blocks for a quantum network have been demonstrated, including quantum error correction [2] and entanglement distillation [3]. A key challenge is to realise high-quality control over multiple 13C spin qubits.

In this talk, I will show how a novel two-qubit gate - based upon radio frequency driving interleaved with dynamical decoupling - enables quantum entanglement of 6+ spins. The results are the largest entangled state realised on this platform, and are a key step for error correction and larger quantum networks with NV centres.

[1] B. Hensen et al. Nature 526.7575 (2015)
[2] J. Cramer et al. Nature communications 7(2016)
[3] N. Kalb et al. Science 356.6341 (2017)

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Presenters

  • Conor Bradley

    QuTech and Kavli Institute of Nanoscience, Delft Univeristy of Technology, QuTech and Kavli Institute of Nanoscience, Delft University of Technology, QuTech and Kavli Institute of Nanoscience Delft

Authors

  • Conor Bradley

    QuTech and Kavli Institute of Nanoscience, Delft Univeristy of Technology, QuTech and Kavli Institute of Nanoscience, Delft University of Technology, QuTech and Kavli Institute of Nanoscience Delft

  • Joe Randall

    QuTech and Kavli Institute of Nanoscience, Delft Univeristy of Technology, QuTech and Kavli Institute of Nanoscience, Delft University of Technology, QuTech and Kavli Institute of Nanoscience Delft, Delft University of Technology

  • Remon Berrevoets

    QuTech and Kavli Institute of Nanoscience, Delft Univeristy of Technology, QuTech and Kavli Institute of Nanoscience, Delft University of Technology

  • Mohamed Abobeih

    QuTech and Kavli Institute of Nanoscience, Delft Univeristy of Technology, QuTech and Kavli Institute of Nanoscience, Delft University of Technology, QuTech and Kavli Institute of Nanoscience Delft

  • Maarten Degen

    QuTech and Kavli Institute of Nanoscience, Delft Univeristy of Technology, QuTech and Kavli Institute of Nanoscience, Delft University of Technology, QuTech and Kavli Institute of Nanoscience Delft, Delft University of Technology

  • Viatcheslav Dobrovitski

    QuTech and Kavli Institute of Nanoscience, TU Delft, the Netherlands, QuTech and Kavli Institute of Nanoscience, Delft Univeristy of Technology, QuTech and Kavli Institute of Nanoscience, Delft University of Technology, QuTech and Kavli Institute of Nanoscience Delft, TU Delft, QuTech

  • Tim Hugo Taminiau

    QuTech and Kavli Institute of Nanoscience, Delft Univeristy of Technology, QuTech and Kavli Institute of Nanoscience, Delft University of Technology, QuTech and Kavli Institute of Nanoscience Delft, Delft University of Technology