Entanglement purification of Gaussian continuous variable quantum states
Quantum Physics
2009-10-31 v2
Abstract
We describe an entanglement purification protocol to generate maximally entangled states with high efficiencies from two-mode squeezed states or from mixed Gaussian continuous entangled states. The protocol relies on a local quantum non-demolition measurement of the total excitation number of several continuous variable entangled pairs. We propose an optical scheme to do this kind of measurement using cavity enhanced cross--Kerr interactions.
Cite
@article{arxiv.quant-ph/9912017,
title = {Entanglement purification of Gaussian continuous variable quantum states},
author = {Lu-Ming Duan and G. Giedke and J. I. Cirac and P. Zoller},
journal= {arXiv preprint arXiv:quant-ph/9912017},
year = {2009}
}
Comments
4 pages,1 figure, final version