We examine the possibility of coherent, reversible information transfer between solid-state superconducting qubits and ensembles of ultra-cold atoms. Strong coupling between these systems is mediated by a microwave transmission line resonator that interacts near-resonantly with the atoms via their optically excited Rydberg states. The solid-state qubits can then be used to implement rapid quantum logic gates, while collective metastable states of the atoms can be employed for long-term storage and optical read-out of quantum information.
@article{arxiv.0902.0881,
title = {Reversible state transfer between superconducting qubits and atomic ensembles},
author = {D. Petrosyan and G. Bensky and G. Kurizki and I. Mazets and J. Majer and J. Schmiedmayer},
journal= {arXiv preprint arXiv:0902.0881},
year = {2009}
}