The last two decades have witnessed a rapid development of quantum information processing, a new paradigm which studies the power and limit of “quantum advantages” in various information processing tasks. Problems such as when quantum advantage exists, and if existing, how much it could be, are at a central position of these studies. In a broad class of scenarios, there are, implicitly or expli...

It is well known that quantum entanglement makes certain tasks in quantum information theory possible. However, there are also quantum tasks that display a quantum advantage without entanglement. Distinguishing classical and quantum correlations in quantum systems is therefore of both practical and fundamental importance. Realistic quantum systems are not closed, and therefore it is important t...

Radhakrishnan et al. (Phys. Rev. Lett. 124:110401, 2020) proposed quantum discord to multipartite systems and derived explicit formulae for any states. These results are significant in capturing correlations multiqubit systems. In this paper, we evaluate the geometric measure of obtain a large family Furthermore, investigated dynamic behavior two-, three- four-qubit states under phase noise act...

A polarization has developed in American political debates concerning the nature of society as a rational agent that implements policies to govern individual behavior. As analyzed by Lakoff, the reasons for discord are not entirely based on logical consistency, but originate in radically different moral principles based on metaphors, values, and faith. How people attend to alternative views, ha...