Distilling Non-Locality

Understand

Two parts of an entangled quantum state can have a correlation in their joint behavior under measurements that is unexplainable by shared classical information.

• Such correlations are called non-local and have proven to be an interesting resource for information processing.
• Since non-local correlations are more useful if they are stronger, it is natural to ask whether weak non-locality can be amplified.
• We give an affirmative answer by presenting the first protocol for distilling non-locality in the framework of generalized non-signaling theories.