Phys. Rev. A 61, 032305 (2000) [8 pages]Entanglement quantification and purification in continuous-variable systemsReceived 6 July 1999; published 10 February 2000 We develop theoretical and numerical tools for the quantification of entanglement in systems with continuous degrees of freedom. Continuous variable entanglement swapping is introduced and based on this idea we develop methods of entanglement purification for continuous variable systems. The success of these entanglement purification methods is then assessed using these tools. © 2000 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevA.61.032305
DOI:
10.1103/PhysRevA.61.032305
PACS:
03.67.Hk, 42.50.-p
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