Functional boxes, communication complexity and information causality

Details Functional boxes, communication complexity and information causality Functional boxes, communication complexity and information causality

2011-09-23

arxiv.org/abs/1109.4988v2

Physics

Quantum Physics

Scientific paper

We propose a class of nonlocal boxes named functional boxes which include a generalization of the Popescu-Rohrlich(PR) box as a special case. We show that every functional box corresponding to an additively inseparable function can make communication complexity trivial and thus seems unlikely to exist in nature. Then we relate general nonlocal boxes to these functional boxes, and derive several limits on them from the principle of information causality.

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