Journal article
A single-atom electron spin qubit in silicon
JJ Pla, KY Tan, JP Dehollain, WH Lim, JJL Morton, DN Jamieson, AS Dzurak, A Morello
Nature | Published : 2012
DOI: 10.1038/nature11449
Abstract
A single atom is the prototypical quantum system, and a natural candidate for a quantum bit, or qubit-the elementary unit of a quantum computer. Atoms have been successfully used to store and process quantum information in electromagnetic traps, as well as in diamond through the use of the nitrogen-vacancy-centre point defect. Solid-state electrical devices possess great potential to scale up such demonstrations from few-qubit control to larger-scale quantum processors. Coherent control of spin qubits has been achieved in lithographically defined double quantum dots in both GaAs (refs 3-5) and Si (ref. 6). However, it is a formidable challenge to combine the electrical measurement capabiliti..
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Awarded by European Commission
Funding Acknowledgements
We thank R. P. Starrett, D. Barber, C. Y. Yang and R. Szymanski for technical assistance. We also thank A. Laucht for the Bloch sphere artwork and D. Reilly for comments on the manuscript. This research was funded by the Australian Research Council Centre of Excellence for Quantum Computation and Communication Technology (project number CE11E0096) and the US Army Research Office (W911NF-08-1-0527). We acknowledge support from the Australian National Fabrication Facility.