Entanglement purification of multi-mode quantum states

Abstract

An iterative random procedure is considered allowing an entanglement purification of a class of multi-mode quantum states. In certain cases, a complete purification may be achieved using only a single signal state preparation. A physical implementation based on beam splitter arrays and non-linear elements is suggested. The influence of loss is analyzed in the example of a purification of entangled N-mode coherent states.

6 pages, 3 eps-figures, using revtex4

References in corpus (4)

• On the impossibility of distilling Gaussian states with Gaussian operations
• The characterization of Gaussian operations and Distillation of Gaussian States
• Purification and detection of entangled coherent states
• Quantum state conversion by cross-Kerr interaction

Cited by in corpus (1)

• Two photons co- and counter-propagating through $N$ cross-Kerr sites