Bell-inequality violation with a triggered photon-pair source

Details Bell-inequality violation with a triggered photon-pair source Bell-inequality violation with a triggered photon-pair source

2008-04-04

arxiv.org/abs/0804.0716v1

Phys.Rev.Lett.102:030406,2009

Physics

Quantum Physics

14 pages, 4 figures

Scientific paper

10.1103/PhysRevLett.102.030406

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 can be 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 non-local quantum correlations.

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