Phonon-induced decoherence in donor-based charge qubits

Solid-state based nanostructures have become in recent years promising candidates for the experimental realization of devices in which quantum information can be processed. In this work we study a particular kind of charge qubits in which the information is stored in the lowest orbital states of an electron shared by a pair dopant ions embedded in a silicon crystal. In particular, we investigate the phonon-driven decoherence and its dependence on temperature. The influence of the inter-ion distance on the decoherence process will also be discussed.