Quantum Information Technology based on Single Electron Dynamics
T. Fujisawa · 2003
Quantum information technology promises powerful information processing based on the control of the dynamics of individual particles. Research on single electron dynamics aiming at the coherent electrical manipulation of single electron charge and spin in semiconductor quantum dots is expected to provide practical quantum information technology. A single electron charge quantum bit (qubit), which has recently been realized in a double quantum dot, is advantageous for flexible control of the quantum state by a high-speed electrical signal, while a single electron spin qubit is expected to have a sufficiently long decoherence time. This paper reviews our research on single electron dynamics for quantum information processing.