The search for empirical schemes to evidence the nonclassicality of large masses is a
central quest of current research. However, practical schemes to witness the irreducible …

Abstract The Leggett–Garg inequality attempts to classify experimental outcomes as arising
from one of two possible classes of physical theories: those described by macrorealism …

One of the central problems in quantum theory is to characterize, detect, and quantify
quantumness in terms of classical strategies. Dephasing processes, caused by non …

We investigate the relation between a refined version of Leggett and Garg conditions for
macrorealism, namely, the no-signaling-in-time (NSIT) conditions, and the quantum …

Experimental validation and control of quantum traits for an open quantum system are
important for any quantum information purpose. We consider a traveling atom qubit as a …

Quantum Darwinism is a compelling theory that describes the quantum-to classical transition
as the emergence of objectivity of quantum systems. Spectrum broadcast structure and …

Exciton transfer along a bio-polymer is essential for many biological processes, for instance,
light harvesting in photosynthetic biosystems. Here we apply a new witness of non …

The ongoing exploration of the ambiguous boundary between the quantum and the classical
worlds has spurred substantial developments in quantum science and technology. Recently …

In the tests for macrorealism proposed by Leggett and Garg, the temporal correlation
functions of a dichotomic variable Q must be measured in a noninvasive way to rule out …

We study nonclassical effects in the dynamics of an open quantum system. The model
involves a harmonic oscillator coupled to a reservoir of noninteracting harmonic oscillators …