Measuring the entanglement of bipartite pure states - art. no. 042303

Authors
Sancho, JMG Huelga, SF
Citation
Jmg. Sancho et Sf. Huelga, Measuring the entanglement of bipartite pure states - art. no. 042303, PHYS REV A, 6104(4), 2000, pp. 2303
Citations number
20
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW A
ISSN journal
10502947 → ACNP
Volume
6104
Issue
4
Year of publication
2000
Database
ISI
SICI code
1050-2947(200004)6104:4<2303:MTEOBP>2.0.ZU;2-P
Abstract
The problem of the experimental determination of the amount of entanglement of a bipartite pure state is addressed. We show that measuring a Single ob servable does nor suffice to determine the entanglement of a given unknown pure state of two particles. Possible minimal local measuring strategies ar e discussed, and a comparison is made on the basis of their best achievable precision.