TY - JOUR
AB - What can we learn about entanglement between individual particles in macroscopic samples by observing
only the collective properties of the ensembles? Using only a few experimentally feasible collective properties,
we establish an entanglement measure between two samples of spin-1/2 particles as representatives of twodimensional
quantum systems. This is a tight lower bound for the average entanglement between all pairs of
spins in general and is equal to the average entanglement for a certain class of systems. We compute the
entanglement measures for explicit examples and show how to generalize the method to more than two
samples and multipartite entanglement.t„
AU - Kofler, J.
AU - Brukner, Č.
DA - 2006/11/16/
JF - Phys. Rev. A
PY - 2006
SE - 2006/11/16/
TI - Entanglement distribution revealed by macroscopic observationset
UR - http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=PLRAAN000074000005050304000001&idtype=cvips&gifs=yes
ER -