Macroscopically Nonlocal Quantum Correlations
Miguel Gallego, Borivoje Dakić
Abstract
It is usually believed that coarse graining of quantum correlations leads to classical correlations in the macroscopic limit. Such a principle, known as macroscopic locality, has been proved for correlations arising from independent and identically distributed (IID) entangled pairs. In this Letter, we consider the generic (non-IID) scenario. We find that the Hilbert space structure of quantum theory can be preserved in the macroscopic limit. This leads directly to a Bell violation for coarse-grained collective measurements, thus breaking the principle of macroscopic locality.
Topics & Concepts
PhysicsLocalityQuantum nonlocalityGranularityLimit (mathematics)QuantumHilbert spaceClassical limitStatistical physicsQuantum mechanicsQuantum correlationTheoretical physicsQuantum discordMathematicsOpen quantum systemQuantum entanglementMathematical analysisComputer scienceOperating systemPhilosophyLinguisticsQuantum Mechanics and ApplicationsQuantum Information and CryptographyAdvanced Thermodynamics and Statistical Mechanics