We are an experimental quantum optics group run by Kevin Resch, based in the Department of Physics & Astronomy and the Institute for Quantum Computing at the University of Waterloo.

Non…Trajec in Science Advances local…tories

Our article, Experimental nonlocal and surreal Bohmian trajectories, by D. H. Mahler, L. Rozema, K. Fisher, L. Vermeyden, K.J. Resch, H.M. Wiseman, and A. Steinberg was published in Science Advances.  The work is the result of a collaboration between the University of Toronto, Griffith University, and University of Waterloo.

Abstract: Weak measurement allows one to empirically determine a set of average trajectories for an ensemble of quantum particles. However, when two particles are entangled, the trajectories of the first particle can depend nonlocally on the position of the second particle. Moreover, the theory describing these trajectories, called Bohmian mechanics, predicts trajectories that were at first deemed “surreal” when the second particle is used to probe the position of the first particle. We entangle two photons and determine a set of Bohmian trajectories for one of them using weak measurements and postselection. We show that the trajectories seem surreal only if one ignores their manifest nonlocality.

See also:
Realism is for people who can’t handle their nonlocality by A. Steinberg.
(Here is a link to the paper by Braverman and Simon referred to in the article as ‘further reading’)

Researchers demonstrate ‘quantum surrealism’ on

Quantum weirdness may hide an orderly reality after all on

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