Strong nonlocality: A trade-off between states and measurements - Quantum PhysicsReport as inadecuate




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Abstract: Measurements on entangled quantum states can produce outcomes that arenonlocally correlated. But according to Tsirelson-s theorem, there is aquantitative limit on quantum nonlocality. It is interesting to explore whatwould happen if Tsirelson-s bound were violated. To this end, we consider amodel that allows arbitrary nonlocal correlations, colloquially referred to as-box world-. We show that while box world allows more highly entangled statesthan quantum theory, measurements in box world are rather limited. As aconsequence there is no entanglement swapping, teleportation or dense coding.



Author: Anthony J. Short, Jonathan Barrett

Source: https://arxiv.org/







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