Physics – Quantum Physics
Scientific paper
2011-04-15
Phys. Rev. Lett. 107, 240502 (2011)
Physics
Quantum Physics
4 pages + 2 page supplement, no figures, revtex4; v2: more detailed explanation, some proofs were moved to the Appendix, publi
Scientific paper
10.1103/PhysRevLett.107.240502
We determine the complete set of generalized spin squeezing inequalities, given in terms of the collective angular momentum components, for particles with an arbitrary spin. They can be used for the experimental detection of entanglement in an ensemble in which the particles cannot be individually addressed. We also present a large set of criteria involving collective observables different from the angular momentum coordinates. We show that some of the inequalities can be used to detect k-particle entanglement and bound entanglement.
Egusquiza Inigo L.
Hyllus Philipp
Tóth Géza
Vitagliano Giuseppe
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