Quantum computing

While devising a new quantum algorithm, four researchers accidentally established a hard limit on entanglement.

Researchers have proved that secure quantum encryption is possible in a world without hard problems.

In the search for the most scalable hardware to use for quantum computers, qubits made of individual atoms are having a breakout moment.

Teleporting people through space is still science fiction. But quantum teleportation is dramatically different and entirely real. In this episode, Janna Levin interviews the theoretical physicist John Preskill about teleporting bits and the promise of quantum technology.

Researchers have shown that a problem relating to the energy of a quantum system is easy for quantum computers but hard for classical ones.

A series of advances seemed to promise the impossible: the existence of quantum states that would never, ever fall into disarray. But physicists are now discovering that the pull of disorder may not be so easily overcome.

Two researchers have proved that Penrose tilings, famous patterns that never repeat, are mathematically equivalent to a kind of quantum error correction.

From the smallest scales to the largest, the physical world provided no shortage of surprises this year.

Artificial intelligence learned how to generate text and art better than ever before, while computer scientists developed algorithms that solved long-standing problems.