Controllable Gaussian-qubit interface for extremal quantum state engineering
Quantum Physics
2015-05-18 v2 Statistical Mechanics
Abstract
We study state engineering through bilinear interactions between two remote qubits and two-mode Gaussian light fields. The attainable two-qubit states span the entire physically allowed region in the entanglement-versus-global-purity plane. Two-mode Gaussian states with maximal entanglement at fixed global and marginal entropies produce maximally entangled two-qubit states in the corresponding entropic diagram. We show that a small set of parameters characterizing extremally entangled two-mode Gaussian states is sufficient to control the engineering of extremally entangled two-qubit states, which can be realized in realistic matter-light scenarios.
Cite
@article{arxiv.1003.2402,
title = {Controllable Gaussian-qubit interface for extremal quantum state engineering},
author = {G. Adesso and S. Campbell and F. Illuminati and M. Paternostro},
journal= {arXiv preprint arXiv:1003.2402},
year = {2015}
}
Comments
4+3 pages, 6 figures, RevTeX4. Close to published version with appendix