For a century, quantum theory has passed every experimental test, but physicists can’t agree on how to use it to paint a ...

A survey of Scientific American’s century of quantum coverage helps explain the enduring popularity of strange physics ...

Quantum entanglement. Conceptual artwork of a pair of entangled quantum particles or events interacting at a distance. Quantum entanglement is one of the consequences of quantum theory.

A survey of more than 1,000 physicists finds deep disagreements in what quantum theories mean in the real world ...

Physicists are trying to rewrite the axioms of quantum theory from scratch in an effort to understand what it all means. The problem? They’ve been almost too successful.

Black hole and Big Bang singularities break our best theory of gravity. A trilogy of theorems hints that physicists must go ...

Quantum mechanics is perhaps the most unintuitive theory ever devised. And yet it’s also the most successful, in terms of sheer predictive power. Simply by following the math of quantum ...

A complete quantum computer (QC), fulfilling the mission set forth for it by scientists and engineers, and realizing the ingenious vision of Dr. Richard Feynman [PDF], has yet to be constructed.

String theory is perhaps the most high-profile candidate for what physicists call a theory of everything – a single ...

A new study shows quantum entanglement follows universal rules across dimensions using thermal effective theory.