# Observing the Average Trajectories of Single Photons in a Two-Slit Interferometer

@article{Kocsis2011ObservingTA, title={Observing the Average Trajectories of Single Photons in a Two-Slit Interferometer}, author={Sacha Kocsis and Boris Braverman and Sylvain Ravets and Martin J Stevens and Richard P. Mirin and Lynden K. Shalm and Aephraim M. Steinberg}, journal={Science}, year={2011}, volume={332}, pages={1170 - 1173} }

An experiment determined the trajectories of single photons through a two-slit interferometer. A consequence of the quantum mechanical uncertainty principle is that one may not discuss the path or “trajectory” that a quantum particle takes, because any measurement of position irrevocably disturbs the momentum, and vice versa. Using weak measurements, however, it is possible to operationally define a set of trajectories for an ensemble of quantum particles. We sent single photons emitted by a…

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