Journal
NATURE NANOTECHNOLOGY
Volume 12, Issue 1, Pages 61-66Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/NNANO.2016.178
Keywords
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Funding
- Australian Research Council Centre of Excellence for Quantum Computation and Communication Technology [CE110001027]
- US Army Research Office [W911NF-13-1-0024]
- Australian National Fabrication Facility
- laboratory of R. Elliman at the Australian National University
- Japanese Society for the Promotion of Science JSPS KAKEN
- Core-to-Core Program
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Coherent dressing of a quantum two-level system provides access to a new quantum system with improved properties-a different and easily tunable level splitting, faster control and longer coherence times. In our work we investigate the properties of the dressed, donor-bound electron spin in silicon, and assess its potential as a quantum bit in scalable architectures. The two dressed spin-polariton levels constitute a quantum bit that can be coherently driven with an oscillating magnetic field, an oscillating electric field, frequency modulation of the driving field or a simple detuning pulse. We measure coherence times of T-2 rho(star) = 2.4 ms and T-2 rho(Hahn) = 9ms, one order of magnitude longer than those of the undressed spin. Furthermore, the use of the dressed states enables coherent coupling of the solid-state spins to electric fields and mechanical oscillations.
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