Nonlocal Young tests with Einstein-Podolsky-Rosen correlated particle pairs

TL;DR

This paper investigates nonlocal spatial interference in EPR entangled particles passing through a double grating, deriving an entanglement criterion based on observed correlations and discussing experimental robustness and realizations.

Contribution

It introduces a new entanglement certification method based solely on spatial correlation measurements in a double grating setup.

Findings

Derived an entanglement criterion from spatial correlations

Demonstrated robustness of the scheme under experimental conditions

Discussed potential realizations with matter waves

Abstract

We evaluate the nonlocal spatial interference displayed by Einstein-Podolsky-Rosen entangled particle pairs after they pass through a double grating arrangement. An entanglement criterion is derived which serves to certify the underlying entanglement only from the observed spatial correlations. We discuss the robustness of the scheme along with a number of possible realizations with matter waves.