title: Bell-inequality violation with a triggered photon-pair source.
abstract: Here we demonstrate, for the first time, violation of Bell's inequality using a triggered quantum dot photon-pair source without post-selection. Furthermore, the fidelity to the expected Bell state is increased above 90% using temporal gating to reject photons emitted at times when collection of uncorrelated light is more probable. A direct measurement of a CHSH Bell inequality is made showing a clear violation, highlighting that a quantum dot entangled photon source is suitable for communication exploiting nonlocal quantum correlations.
authors.affiliation: Toshiba Research Europe Limited, 208 Cambridge Science Park, Cambridge CB4 0GZ, United Kingdom. aps@r-j-y.com
authors.forename: R J
authors.initials: RJ
authors.lastname: Young
authors.forename: R M
authors.initials: RM
authors.lastname: Stevenson
authors.forename: A J
authors.initials: AJ
authors.lastname: Hudson
authors.forename: C A
authors.initials: CA
authors.lastname: Nicoll
authors.forename: D A
authors.initials: DA
authors.lastname: Ritchie
authors.forename: A J
authors.initials: AJ
authors.lastname: Shields