Journal
PHYSICAL REVIEW LETTERS
Volume 119, Issue 17, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.119.173202
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Funding
- European Research Council
- People Programme (Marie Curie Actions) under European Union's Seventh Framework Programme
- H2020 Programme / ERC [267775]
- REA [618760, 704832]
- ANR [15-CE30-0017]
- Churchill College, Cambridge
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We present a free-space interferometer to observe two-particle interference of a pair of atoms with entangled momenta. The source of atom pairs is a Bose-Einstein condensate subject to a dynamical instability, and the interferometer is realized using Bragg diffraction on optical lattices, in the spirit of our recent Hong-Ou-Mandel experiment. We report on an observation ruling out the possibility of a purely mixed state at the input of the interferometer. We explain how our current setup can be extended to enable a test of a Bell inequality on momentum observables.
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