The field of cavity optomechanics is reviewed. This field explores the interaction between
electromagnetic radiation and nanomechanical or micromechanical motion. This review …

A central result in the foundations of quantum mechanics is the Kochen-Specker theorem. In
short, it states that quantum mechanics is in conflict with classical models in which the result …

We study holographic entanglement entropy in dS/CFT and introduce timelike entanglement
entropy in CFTs. Both of them take complex values in general and are related with each …

Some measurements in quantum mechanics disturb each other. This has puzzled physicists
since the formulation of the theory, but only in recent decades has the incompatibility of …

We propose a method to prepare and verify spatial quantum superpositions of a nanometer-
sized object separated by distances of the order of its size. This method provides …

Large-scale quantum effects have always played an important role in the foundations of
quantum theory. With recent experimental progress and the aspiration for quantum …

Two topics, evolving rapidly in separate fields, were combined recently: the out-of-time-
ordered correlator (OTOC) signals quantum-information scrambling in many-body systems …

We show how the interference between spatially separated states of the center of mass (cm)
of a mesoscopic harmonic oscillator can be evidenced by coupling it to a spin and …

In 1985, Leggett and Garg put forward the concept of macroscopic realism (macrorealism)
and, in analogy to Bell's theorem, derived a necessary condition in terms of inequalities …

Conceptually different from the decoherence program, we present a novel theoretical
approach to macroscopic realism and classical physics within quantum theory. It focuses on …