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Lectures on dynamical models for quantum measurements
Theo M. Nieuwenhuizen, Marti Perarnau-Llobet, Roger Balian
In textbooks, ideal quantum measurements are described in terms of the tested system only by the collapse postulate and Born's rule. This level of description offers a rather flexi…
A sub-ensemble theory of ideal quantum measurement processes
Armen E. Allahverdyan, Roger Balian, Theo M. Nieuwenhuizen
To elucidate ideal measurements, one must explain how individual events emerge from quantum theory which deals with statistical ensembles, and how different may end up with differe…
Understanding quantum measurement from the solution of dynamical models
Armen E. Allahverdyan, Roger Balian, Theo M. Nieuwenhuizen
The quantum measurement problem, understanding why a unique outcome is obtained in each individual experiment, is tackled by solving models. After an introduction we review the man…
The Quantum Measurement Process: Lessons from an Exactly Solvable Model
Armen E. Allahverdyan, Roger Balian, Theo M. Nieuwenhuizen
The measurement of a spin-$\half$ is modeled by coupling it to an apparatus, that consists of an Ising magnetic dot coupled to a phonon bath. Features of quantum measurements are d…
Phase transitions and quantum measurements
Armen E. Allahverdyan, Roger Balian, Theo M. Nieuwenhuizen
In a quantum measurement, a coupling between the system S and the apparatus A triggers the establishment of correlations, which provide statistical information about S. Robust…
Dynamics of a quantum measurement
Armen E. Allahverdyan, Roger Balian, Theo M. Nieuwenhuizen
We work out an exactly solvable hamiltonian model which retains all the features of realistic quantum measurements. In order to use an interaction process involving a system and an…