2002/04/19 by Jaromir Fiurasek · 1 citation
Physics and Astronomy · #quant-ph
paper · pdf · doi:10.1103/physrevlett.89.137904
published as Phys. Rev. Lett. 89, 137904 (2002). · 4 pages, 2 figures, added reference to the related paper by Giedke and Cirac
arxiv created 2002/04/19 · arxiv updated 2009/12/01
We prove that it is impossible to distill more entanglement from a single copy of a two-mode bipartite entangled Gaussian state via LOCC Gaussian operations. More generally, we show that any hypothetical distillation protocol for Gaussian states involving only Gaussian operations would be a deterministic protocol. Finally, we argue that the protocol considered by Eisert et al. [quant-ph/0204052] is the optimum Gaussian distillation protocol for two copies of entangled Gaussian states.