Journal article
A dressed spin qubit in silicon
Arne Laucht, Rachpon Kalra, Stephanie Simmons, Juan P Dehollain, Juha T Muhonen, Fand A Mohiyaddin, Solomon Freer, Fay E Hudson, Kohei M Itoh, David N Jamieson, Jeffrey C McCallum, Andrew S Dzurak, A Morello
Nature Nanotechnology | Nature Research | Published : 2017
Abstract
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 T2ρ* = 2.4 ms and THahn 2ρ = 9 ms, one order of magnitude longer than t..
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Awarded by Australian Research Council Centre of Excellence for Quantum Computation and Communication Technology
Awarded by US Army Research Office
Funding Acknowledgements
This research was funded by the Australian Research Council Centre of Excellence for Quantum Computation and Communication Technology (project number CE110001027) and the US Army Research Office (W911NF-13-1-0024). We acknowledge support from the Australian National Fabrication Facility and from the laboratory of R. Elliman at the Australian National University for the ion-implantation facilities. The work at Keio was supported by the Japanese Society for the Promotion of Science JSPS KAKEN (S) and the Core-to-Core Program.