title: Experimental creation of a fully inseparable tripartite continuous-variable state.
abstract: A continuous-variable tripartite entangled state is experimentally generated by combining three independent squeezed vacuum states, and the variances of its relative positions and total momentum are measured. We show that the measured values violate the separability criteria based on the sum of these quantities and prove the full inseparability of the generated state.
authors.affiliation: Department of Applied Physics, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan.
authors.forename: Takao
authors.initials: T
authors.lastname: Aoki
authors.forename: Nobuyuki
authors.initials: N
authors.lastname: Takei
authors.forename: Hidehiro
authors.initials: H
authors.lastname: Yonezawa
authors.forename: Kentaro
authors.initials: K
authors.lastname: Wakui
authors.forename: Takuji
authors.initials: T
authors.lastname: Hiraoka
authors.forename: Akira
authors.initials: A
authors.lastname: Furusawa
authors.forename: Peter
authors.initials: P
authors.lastname: van Loock