Ryszard Horodecki, Michal Horodecki, Pawel Horodecki
Published 1996-06-25Version 1
Relations between teleportation, Bell's inequalities and inseparability are investigated. It is shown that any mixed two spin-$1\over2$ state which violates the Bell-CHSH inequality is useful for teleportation. The result is extended to any Bell's inequalities constructed of the expectation values of products of spin operators. It is also shown that there exist inseparable states which are not useful for teleportation within the standard scheme.
Comments: RevTeX, 4 pages
Estimating the expectation values of spin 1/2 observables with finite resources
Group theory and the link between expectation values of powers of $r$ and Clebsch-Gordan coefficients
Expectation values of $p^2$ and $p^4$ in the square well potential
