For nearly a century, some of the simplest questions in quantum theory have stubbornly resisted clean answers, turning basic ...

Scientists test Einstein’s quantum challenge with one atom, directly measuring when photon paths erase interference stripes.

At the smallest scales of nature, the rules of the world shift in ways that can feel unsettling and beautiful at the same ...

Physicists at Heidelberg University have developed a new theory that finally unites two long-standing and seemingly ...

At 15, a Belgian prodigy finishes a quantum physics PhD and turns to AI-driven medicine, raising an unexpected question about ...

The team have pushed the boundaries of quantum mechanics beyond what some thought possible. Now they want to go even further ...

In July 1925, physicist Werner Heisenberg wrote a letter to Wolfgang Pauli sharing his new ideas about what would eventually become known as quantum theory. A hundred years later, that theory has been ...

On 9 July 1925, Heisenberg sent a paper titled ‘Quantum-theoretical re-interpretation of kinematic and mechanical relations’ to Max Born, whom he was assisting at that time, and Born sent the paper to ...

If true, the idea would blow past one of physics’ most sacred limits: that parallel versions of reality can never talk to ...

We’re celebrating 180 years of Scientific American. Explore our legacy of discovery and look ahead to the future. This year is the International Year of Quantum Science and Technology, according to ...

A century ago, science went quantum. To celebrate, physicists are throwing a global, year-long party. In 1925, quantum mechanics, the scientific theory that describes the unintuitive rules of physics ...

In the deadly game Russian roulette, a player loads a gun with a single bullet, spins the cylinder to randomize the bullet’s position, and turns the potentially lethal weapon on their own self. But in ...