Reversible state transfer between superconducting qubits and atomic ensembles

TL;DR

This paper explores a method for coherent, reversible transfer of quantum information between superconducting qubits and cold atomic ensembles using a microwave resonator, enabling combined fast processing and long-term storage.

Contribution

It introduces a hybrid system integrating superconducting qubits with atomic ensembles via a microwave resonator for reversible quantum state transfer.

Findings

Strong coupling achieved between qubits and atoms

Reversible transfer demonstrated theoretically

Potential for integrated quantum computing and memory

Abstract

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.