Superconducting circuits and microwave signals are good candidates to realize quantum networks, which are the backbone of quantum computers. We have realized a quantum node based on a 3D microwave superconducting cavity parametrically coupled to a transmission line by a Josephson ring modulator. We first demonstrate the time-controlled capture, storage and retrieval of an optimally shaped propagating microwave field, with an efficiency as high as 80%. We then demonstrate a second essential ability, which is the timed-controlled generation of an entangled state distributed between the node and a microwave channel.
@article{arxiv.1401.5622,
title = {Superconducting quantum node for entanglement and storage of microwave radiation},
author = {Emmanuel Flurin and Nicolas Roch and Jean-Damien Pillet and François Mallet and Benjamin Huard},
journal= {arXiv preprint arXiv:1401.5622},
year = {2015}
}
Comments
6 pages, 4 figures. Supplementary information can be downloaded as the ancillary file here