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Coherent Control of a Single Si29 Nuclear Spin Qubit

Jarryd J. Pla, Fahd A. Mohiyaddin, Kuan Y. Tan, Juan P. Dehollain, Rajib Rahman, Gerhard Klimeck, David N. Jamieson, Andrew S. Dzurak, and Andrea Morello
Phys. Rev. Lett. 113, 246801 – Published 9 December 2014
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Abstract

Magnetic fluctuations caused by the nuclear spins of a host crystal are often the leading source of decoherence for many types of solid-state spin qubit. In group-IV semiconductor materials, the spin-bearing nuclei are sufficiently rare that it is possible to identify and control individual host nuclear spins. This Letter presents the first experimental detection and manipulation of a single Si29 nuclear spin. The quantum nondemolition single-shot readout of the spin is demonstrated, and a Hahn echo measurement reveals a coherence time of T2=6.3(7)ms—in excellent agreement with bulk experiments. Atomistic modeling combined with extracted experimental parameters provides possible lattice sites for the Si29 atom under investigation. These results demonstrate that single Si29 nuclear spins could serve as a valuable resource in a silicon spin-based quantum computer.

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  • Received 14 July 2014

DOI:https://doi.org/10.1103/PhysRevLett.113.246801

© 2014 American Physical Society

Authors & Affiliations

Jarryd J. Pla1,2,*, Fahd A. Mohiyaddin1,2, Kuan Y. Tan1,2, Juan P. Dehollain1,2, Rajib Rahman3, Gerhard Klimeck3, David N. Jamieson4,5, Andrew S. Dzurak1,2, and Andrea Morello1,2,†

  • 1Centre of Excellence for Quantum Computation and Communication Technology, Sydney, New South Wales 2052, Australia
  • 2School of Electrical Engineering and Telecommunications, The University of New South Wales Australia, Sydney, New South Wales 2052, Australia
  • 3Network for Computational Nanotechnology, Purdue University, West Lafayette, Indiana 47907, USA
  • 4Centre of Excellence for Quantum Computation and Communication Technology, Melbourne, Victoria 3010, Australia
  • 5School of Physics, University of Melbourne, Melbourne, Victoria 3010, Australia

  • *Present address: London Centre for Nanotechnology, University College London, 17-19 Gordon Street, London WC1H 0AH, United Kingdom j.pla@ucl.ac.uk
  • a.morello@unsw.edu.au

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Issue

Vol. 113, Iss. 24 — 12 December 2014

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