We are characterizing Si-based single-electron quantum dots at low temperatures (down to 10 mK) to explore the possibility of quantum coherent manipulation in Si-based technology.
Devices based on moving and controlling single electrons offer the tantalizing possibility of achieving quantum information processing by virtue of their spin or charge coherent properties. We are pursuing CMOS-compatible Si-based SET double quantum dots to explore the possibility of quantum coherent manipulation. The spin degree of freedom of these quantum dots can be controlled with a combination of magnetic fields and high-frequency electrical pulses.
*This work is done in close collaboration with the team of Michael Stewart, Jr., and the devices produced for the quantum coherent experiments are very similar to those used for current standard experiments.