Speaker
Dr
Antonella De Pasquale
(University of Florence, Department of Physics and Astronomy)
Description
We provide a dynamical description of the quantum measurement process by framing it into the mindset of the theory of open quantum systems. The system and the measurement apparatus are considered as interacting quantum objects, such that the former “steals” information from the latter. In this formalism, after a given amount of time, the measurement process emerges in the form of an entangled system–apparatus superposition state whose components correspond to the different outcomes of the measurement. In this respect, we have determined a precise form for the system-apparatus Hamiltonian bringing to a dynamical description of both projective and positive-operator valued measures.
Primary author
Dr
Antonella De Pasquale
(University of Florence, Department of Physics and Astronomy)
Co-authors
Prof.
Alessandro Cuccoli
(University of Florence, Department of Physics and Astronomy)
Ms
Foti Caterina
(University of Florence, Department of Physics and Astronomy)
Prof.
Paola Verrucchi
(Istituto dei Sistemi Complessi ISC-CNR, UoS Dipartimento di Fisica)
Prof.
Vittorio Giovannetti
(NEST, Scuola Normale Superiore and Istituto Nanoscienze)
