We describe a quantum computational architecture based on integrating nanomechanical resonators with Josephson junction phase qubits, with which we implement single- and multi-qubit operations. The nanomechanical resonator is a GHz-frequency, high-quality-factor dilatational resonator, coupled to the Josephson phase through a piezoelectric interaction. This system is analogous to one or more few-level atoms (the Josephson qubits) in a tunable electromagnetic cavity (the nanomechanical resonator). Our architecture combines the best features of solid-state and cavity-QED approaches, and may make possible multi-qubit processing in a scalable, solid-state environment.
@article{arxiv.cond-mat/0311007,
title = {Superconducting Qubit Storage and Entanglement with Nanomechanical Resonators},
author = {Andrew N. Cleland and Michael R. Geller},
journal= {arXiv preprint arXiv:cond-mat/0311007},
year = {2009}
}