In this paper, we consider a qubit in four scenarios: with drive, without drive, and in the
presence of dissipation and dephasing, to investigate the quantum violation of the Leggett …

The characterization of physical systems relies on the observable properties which are
measured, and how such measurements are performed. Here we analyze two ways of …

Decoherence of quantum systems is described by quantum channels. However, a complete
understanding of such channels, especially in the multiparticle setting, is still an ongoing …

With the control of increasingly complex quantum systems, the relevant degrees of freedom
we are interested in may not be those traditionally addressed by statistical quantum …

Starting from a coarse-grained map of a quantum many-body system, we construct the
inverse map that assigns a microscopic state to a coarse-grained state based on the …

In this paper, we construct the metric tensor and volume for the manifold of purifications
associated with an arbitrary reduced density operator ρ S. We also define a quantum coarse …

This book presents new and prospective approaches to quantum computing. It introduces
the many possibilities to further develop the mathematical methods of quantum computation …

It has been established that the entanglement entropy functions as a thermal entropy for
closed many-body systems. In this work, we introduce the entanglement coarse-graining …

En el transcurso del último siglo, la medición ha destacado como uno de los campos de
estudio más notables dentro del ámbito de la mecánica cuántica. La medición es un tipo de …