We propose an experiment which can demonstrate quantum correlations in a physical scenario as discussed in the seminal work of Einstein, Podolsky and Rosen. Momentum-entangled massive particles are produced via the four-wave mixing process of two colliding Bose-Einstein condensates. The particles' quantum correlations can be shown in a double double-slit experiment or via ghost interference.
@article{arxiv.1206.2141,
title = {Einstein-Podolsky-Rosen correlations from colliding Bose-Einstein condensates},
author = {Johannes Kofler and Mandip Singh and Maximilian Ebner and Michael Keller and Mateusz Kotyrba and Anton Zeilinger},
journal= {arXiv preprint arXiv:1206.2141},
year = {2012}
}