Experimental Entangled Entanglement

Author(s): P. Walther, K. J. Resch, Č. Brukner, A. Zeilinger

Journal: Physical Review Letters

Volume: 97

Page(s): 020501

Year: 2006

DOI Number: 10.1103/PhysRevLett.97.020501

Link: Link to publication


All previous tests of local realism have studied correlations between single-particle measurements. In

the present experiment, we have performed a Bell experiment on three particles in which one of the

measurements corresponds to a projection onto a maximally entangled state. We show theoretically and

experimentally that correlations between these entangled measurements and single-particle measurements

are too strong for any local-realistic theory and are experimentally exploited to violate a Clauser-Horne-

Shimony-Holt-Bell inequality by more than 5 standard deviations. We refer to this possibility as

"entangled entanglement."

Note: http://arxiv.org/abs/quant-ph/0508183

File: Link to PDF

Zeilinger Group Zeilinger Group , Brukner Group