260 citations · 271 across the 5 of their papers we have counts for
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math-ph2017★ 4 cited
Perturbation Theory for Weak Measurements in Quantum Mechanics, I -- Systems with Finite-Dimensional State Space
M. Ballesteros, N. Crawford, M. Fraas +2
The quantum theory of indirect measurements in physical systems is studied. The example of an indirect measurement of an observable represented by a self-adjoint operator $\mathcal…
math-ph2017★ 2 cited
Non-demolition measurements of observables with general spectra
M. Ballesteros, N. Crawford, M. Fraas +2
It has recently been established that, in a non-demolition measurement of an observable with a finite point spectrum, the density matrix of the system approaches an e…
math-ph2015★ 5 cited
Indirect retrieval of information and the emergence of facts in quantum mechanics
Miguel Ballesteros, Martin Fraas, Jürg Fröhlich +1
Long sequences of successive direct (projective) measurements or observations of a few "uninteresting" physical quantities of a quantum system may reveal indirect, but precise and…