Electromganetic field control of electron spin magnetic resonance frequency in silicon donors for solid-state quantum computing

The electron-spin magnetic resonance frequency of an electron-spin qubit structure proposed for the realization of a quantum computer is rigorously determined by a numerical method. The potential distribution inside the silicon qubit structure is accurately calculated by an electromagnetic simulation method and the perturbation theory to the second order is formulated to obtain the magnetic resonance frequency of the phosphorus donor electron spin.