Quantum mechanics is full of states that seem to defy ordinary sense, but one of its strangest ideas has usually been built ...

Quantum mechanics, unlike classical physics, allows objects to exist in more than one state at the same time. This idea is ...

Researchers at the University of Oxford have demonstrated a new family of quantum superpositions in which each component is ...

Killing horizon: a thought experiment suggests that the presence of a black hole can decohere a quantum superposition. (Courtesy: Shutterstock/Rost9) A new thought experiment suggests that the mere ...