A gate-defined silicon quantum dot molecule

Details A gate-defined silicon quantum dot molecule A gate-defined silicon quantum dot molecule

2008-06-03

arxiv.org/abs/0806.0422v1

Appl. Phys. Lett. 92, 222104(2008)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

11pages,3figures

Scientific paper

10.1063/1.2938693

We report electron transport measurements of a silicon double dot formed in multi-gated metal-oxide-semiconductor structures with a 15-nm-thick silicon-on-insulator layer. Tunable tunnel coupling enables us to observe an excitation spectrum in weakly coupled dots and an energy level anticrossing in strongly coupled ones. Such a quantum dot molecule with both charge and energy quantization provides the essential prerequisite for future implementation of silicon-based quantum computations.

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