期刊
PHYSICAL REVIEW LETTERS
卷 110, 期 13, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.110.136802
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资金
- Agence Nationale de la Recherche (ANR) through the ACCESS project
- European Commission through the FP7 FET-proactive NanoICT
- European Starting Grant programme
We report on microwave-driven coherent electron transfer between two coupled donors embedded in a silicon nanowire. By increasing the microwave frequency we observe a transition from incoherent to coherent driving revealed by the emergence of a Landau-Zener-Stuckelberg quantum interference pattern of the measured current through the donors. This interference pattern is fitted to extract characteristic parameters of the double-donor system. In particular we estimate a charge dephasing time of 0.3 +/- 0.1 ns, comparable to other types of charge-based two-level systems. The demonstrated coherent coupling between two dopants is an important step towards donor-based quantum computing devices in silicon. DOI: 10.1103/PhysRevLett.110.136802
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