Exploring quantum chaos within a single 123-Sb donor in silicon

ORAL

Abstract

The 123-Sb atom is a group-V element with a nuclear spin quantum number of 7/2, resulting in an 8-dimensional Hilbert space. This atom can be implanted in a silicon Metal-Oxide-Semiconductor structure, and its quantum state can be controlled using the same infrastructure that has been proven to yield high-fidelity control [1] and single-shot readout [2] on the 31-P donor. The key difference in 123-Sb is that the nucleus possesses a quadrupole moment, which can introduce a quadratic term in the spin Hamiltonian when the atom is placed in a strained silicon crystal. By further adding a strong periodic drive, this results in a single-atom quantum system that accurately maps a classically chaotic one: the driven nonlinear top [3]. Therefore, we can engineer a highly controllable, individual quantum system that enables an experimental study of the emergence of chaos and the quantum-to-classical crossover [3]. In this presentation, we will provide a detailed theoretical description of the system, as well as initial results on the spectrum and coherence times of a 123-Sb donor.

[1] J.P. Dehollain et al., New J. Phys. 18, 103018 (2016)
[2] J.J. Pla et al., Nature 496, 334 (2013)
[3] V. Mourik et al., arXiv:1703.04852 (2017)

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Presenters

  • Vincent Mourik

    Center for Quantum Computation and Communication Technology, University of New South Wales, Centre for Quantum Computation and Communication Technology, School of Electrical Engineering and Telecommunications, University of New South Wales

Authors

  • Vincent Mourik

    Center for Quantum Computation and Communication Technology, University of New South Wales, Centre for Quantum Computation and Communication Technology, School of Electrical Engineering and Telecommunications, University of New South Wales

  • Serwan Asaad

    Center for Quantum Computation and Communication Technology, University of New South Wales

  • Hannes Firgau

    Center for Quantum Computation and Communication Technology, University of New South Wales

  • Mark Johnson

    Center for Quantum Computation and Communication Technology, University of New South Wales

  • Mateusz Madzik

    Center for Quantum Computation and Communication Technology, University of New South Wales

  • Arne Laucht

    Center for Quantum Computation and Communication Technology, University of New South Wales, Centre for Quantum Computation and Communication Technology, School of Electrical Engineering and Telecommunications, University of New South Wales

  • Fay Hudson

    Center for Quantum Computation and Communication Technology, University of New South Wales, Centre for Quantum Computation and Communication Technology, School of Electrical Engineering and Telecommunications, University of New South Wales

  • Catherine Holmes

    School of Mathematics and Physics, University of Queensland

  • Gerard Milburn

    ARC Centre of Excellence for Engineered Quantum Systems, University of Queensland

  • Jarryd Pla

    Center for Quantum Computation and Communication Technology, University of New South Wales, London Centre for Nanotechnology

  • Andrew Dzurak

    Center for Quantum Computation and Communication Technology, University of New South Wales, Centre for Quantum Computation and Communication Technology, School of Electrical Engineering and Telecommunications, University of New South Wales, The University of New South Wales, Univ of New South Wales, University of New South Wales

  • Jeffrey McCallumn

    Center for Quantum Computation and Communication Technology, University of Melbourne

  • Andrea Morello

    Center for Quantum Computation and Communication Technology, University of New South Wales, Centre for Quantum Computation and Communication Technology, School of Electrical Engineering and Telecommunications, University of New South Wales