We propose a dynamical scheme for deterministically amplifying photonic Schroedinger cat states based on a set of optimal state-transfers. The scheme can be implemented in strongly coupled qubit-cavity systems and is well suited to the capabilities of state of the art superconducting circuits. The ideal analytical scheme is compared with a full simulation of the open Jaynes-Cummings model with realistic device parameters. This amplification tool can be utilized for practical quantum information processing in non-classical continuous-variable states.
@article{arxiv.1502.06782,
title = {Deterministic amplification of Schroedinger cat states in circuit quantum electrodynamics},
author = {Jaewoo Joo and Matthew Elliott and Daniel K. L. Oi and Eran Ginossar and Timothy P. Spiller},
journal= {arXiv preprint arXiv:1502.06782},
year = {2016}
}