The intricate relationship between quantum mechanics and classical physics has long puzzled scientists. Quantum mechanics operates in a bizarre world where particles can exist in multiple states ...

In a new Physical Review Letters study, researchers propose an experimental approach that could finally determine whether ...

Mikel Díez, Director of Quantum Computing at IBM Spain, explains how the new quantum systems will work alongside classical ...

The prevailing assumption has been that Einstein's theory of gravity must be modified, or 'quantized', in order to fit within quantum theory. This is the approach of two leading candidates for a ...

Quantum information systems, systems that process, store or transmit information leveraging quantum mechanical effects, could ...

The 2025 Nobel Prize in physics honors three quantum physicists—John Clarke, Michel H. Devoret and John M. Martinis—for their ...

For decades, physicists have struggled to develop a quantum theory of gravity. But what if gravity — and space-time — are fundamentally classical? Most physicists expect that when we zoom in on the ...

An illustration of a quantum system that was simulated by both classical and quantum computers. The highlighted sections show how the influence of the system’s components is confined to nearby ...

Mean-field theory and semiclassical methods constitute vital frameworks in contemporary quantum mechanics. By replacing the intricate web of particle interactions with an average or “mean” field, mean ...

At first glance, quantum mechanics might seem strange or even impossible. That’s because our everyday experiences of the laws of physics are very different from how matter and energy behave at the ...

On Tuesday the field of quantum mechanics received a thoughtful 100th-birthday present from the Royal Swedish Academy of ...