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Quantum collapse rules from the maximum relative entropy principle (1407.7766v4)
Published 29 Jul 2014 in quant-ph
Abstract: We show that the von Neumann--Lueders collapse rules in quantum mechanics always select the unique state that maximises the quantum relative entropy with respect to the premeasurement state, subject to the constraint that the postmeasurement state has to be compatible with the knowledge gained in the measurement. This way we provide an information theoretic characterisation of quantum collapse rules by means of the maximum relative entropy principle.
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