## A quantum framework for coarse graining and fuzzy measurements

Tipo
Seminario
Fecha de Inicio
Lugar del Evento

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https://sancarlos.webex.com/meet/gramirez

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Expositores
Dr. (Escuela de Ciencias UNAM)
Descripción

We present a quantum framework for coarse graining and fuzzy
measurements in a multiparticle system, based solely on what might be
physically measured.  For the case of coarse graining, we assume that
the detectors can measure only randomly selected particles with a
physically motivated distribution. For the case of fuzzy measurements,
we assume that the detectors might be placed incorrectly, leading to
misidentification of some particles. In the space of states, both
situations induce completely positive maps that lead to a shrinking of
the state space. These maps are studied in detail; physical quantities
such as the measurable entanglement (and thus the ability to perform