Detecting entanglement in spatial interference

Details Detecting entanglement in spatial interference Detecting entanglement in spatial interference

2011-03-14

arxiv.org/abs/1103.2779v2

Phys. Rev. Lett. 106, 210501 (2011)

Physics

Quantum Physics

4 pages; corresponds to published version

Scientific paper

10.1103/PhysRevLett.106.210501

We discuss an experimentally amenable class of two-particle states of motion giving rise to nonlocal spatial interference under position measurements. Using the concept of modular variables, we derive a separability criterion which is violated by these non-Gaussian states. While we focus on the free motion of material particles, the presented results are valid for any pair of canonically conjugate continuous variable observables and should apply to a variety of bipartite interference phenomena.

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