Decay of quantumness in a measurement process: Action of a coarse-graining channel

A model of a quantum measurement process is presented: a system consisting of a qubit in a superposition interacts with a measuring apparatus consisting of a N qubit state. Looking at the emerging, effective description of the apparatus given by the action of a coarse-graining channel, we have been...

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Veröffentlicht in:	arXiv.org 2020-10
Hauptverfasser:	Carvalho, Gabriel Dias, Correia, Pedro Silva
Format:	Artikel
Sprache:	eng
Schlagworte:	Granulation Mathematics - Mathematical Physics Measuring instruments Physics - Mathematical Physics Physics - Quantum Physics Qubits (quantum computing)
Online-Zugang:	Volltext
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