A small mathematical revision to quantum mechanics could effectively limit the purported infinite capacities of quantum computers—if validated, that is.

This is today's edition of The Download, our weekday newsletter that provides a daily dose of what's going on in the world of technology. A $5 million prize awaits proof that quantum computers can ...

After 30 months of fast-paced innovation in quantum algorithms, six research groups are hoping to hit paydirt. But there can be only one big winner—if there is a winner at all.

A new quantum system called giant superatoms could protect quantum information and enable entanglement between multiple ...

Quantum computers could solve certain problems that would take traditional classical computers an impractically long time to solve. At the Japan Advanced Institute of Science and Technology (JAIST), ...

Quantum AI may become the most consequential technology in human history. Yet it feels like someone else's problem to us.

Cryptography pioneers Charles Bennett (left) and Gilles Brassard introduced the BB84 protocol the uses the principles of ...

Charles Bennett and Gilles Brassard pioneered quantum information theory. Now they’ve been awarded the highest honor in computer science.

Austrian physicist Erwin Schrödinger developed quantum theory’s wave equation, which describes quantum systems as waves that ...

IBM unveils revolutionary quantum-centric supercomputing architecture, integrating quantum processors with GPUs and CPUs for advanced scientific research.

Researchers from MIT, Cambridge, Mass., and elsewhere have developed what they call “a new class of photonic devices that ...