Entanglement over Einstein: experimental violations of Bell’s inequality - Evan Meyer-Scott

Bell’s inequality provides a limit to the correlations possible in classical physics. Quantum mechanics predicts stronger correlations, but only recently have these stronger correlations been observed with a reasonably minimal set of experimental assumptions. In the first part of the talk I will present the ``loophole-free’’ Bell inequality violation using entangled photon pairs from the National Institute of Standards and Technology (USA). I will then discuss future extensions to these experiments, concerning long-distance transmission and multi-party correlations. In the former, I will show how it is possible to remove some of the effects of channel loss via photonic qubit precertification, allowing the violation of Bell’s inequality even over long distance. In the latter, I will show a recent experiment verifying the time-energy entanglement of photon triplets.