Wigner function description of continuous variable entanglement swapping

Authors
Liu, JM Shi, BS Fan, XF Li, J Guo, GC
Citation
Jm. Liu et al., Wigner function description of continuous variable entanglement swapping, J OPT B-QUA, 3(4), 2001, pp. 189-193
Citations number
34
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
JOURNAL OF OPTICS B-QUANTUM AND SEMICLASSICAL OPTICS
ISSN journal
14644266 → ACNP
Volume
3
Issue
4
Year of publication
2001
Pages
189 - 193
Database
ISI
SICI code
1464-4266(200108)3:4<189:WFDOCV>2.0.ZU;2-E
Abstract
We discuss the continuous variable entanglement swapping using the Wigner f unction. The sufficient inseparability criterion for continuous variable sy stems is used to analyse the quantum correlation. Perfect teleportation can be obtained by increasing the degree of squeezing on the entanglement sour ce. Entanglement swapping occurs for any nonzero squeezing in both of the t wo initial sources if optimal gain is obtained.