Entanglement vs. the quantum-to-classical transition

Abstract

We analyze the quantum-to-classical transition (QCT) for coupled bipartite quantum systems for which the position of one of the two subsystems is continuously monitored. We obtain the surprising result that the QCT can emerge concomitantly with the presence of highly entangled states in the bipartite system. Furthermore the changing degree of entanglement is associated with the back-action of the measurement on the system and is itself an indicator of the QCT. Our analysis elucidates the role of entanglement in von Neumann's paradigm of quantum measurements comprised of a system and a monitored measurement apparatus.

References in corpus (7)

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• Faraday spectroscopy in an optical lattice: a continuous probe of atom dynamics
• The transition to classical chaos in a coupled quantum system through continuous measurement
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• Emergence of Classical Dynamics from a Random Matrix Schrödinger Model
• Conditions for the Quantum to Classical Transition: Trajectories vs. Phase Space Distributions