title: Experimental methods for detecting entanglement.
abstract: Here we present experimental realizations of two new entanglement detection methods: a three-measurement Bell inequality inequivalent to the Clauser-Horne-Shimony-Holt inequality and a nonlinear Bell-type inequality based on the negativity measure. In addition, we provide an experimental and theoretical comparison between these new methods and several techniques already in use: the traditional Clauser-Horne-Shimony-Holt inequality, the entanglement witness, and complete state tomography.
authors.affiliation: Department of Physics, University of Illinois at Urbana-Champaign, Urbana, IL 61801-3080, USA. altepete@uiuc.edu
authors.forename: J B
authors.initials: JB
authors.lastname: Altepeter
authors.forename: E R
authors.initials: ER
authors.lastname: Jeffrey
authors.forename: P G
authors.initials: PG
authors.lastname: Kwiat
authors.forename: S
authors.initials: S
authors.lastname: Tanzilli
authors.forename: N
authors.initials: N
authors.lastname: Gisin
authors.forename: A
authors.initials: A
authors.lastname: Acín