Optimal spin squeezing inequalities detect bound entanglement in spin models

Details Optimal spin squeezing inequalities detect bound entanglement in spin models Optimal spin squeezing inequalities detect bound entanglement in spin models

2007-02-26

arxiv.org/abs/quant-ph/0702219v5

Phys. Rev. Lett. 99, 250405 (2007)

Physics

Quantum Physics

5 pages, 2 figures, 1 table; small changes, published version

Scientific paper

10.1103/PhysRevLett.99.250405

We determine the complete set of generalized spin squeezing inequalities.
These are entanglement criteria that can be used for the experimental detection
of entanglement in a system of spin-1/2 particles in which the spins cannot be
individually addressed. They can also be used to show the presence of bound
entanglement in the thermal states of several spin models.

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