What's up in

# quantum computing

## Latest Articles

### Cryptographers Discover a New Foundation for Quantum Secrecy

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

### The Best Qubits for Quantum Computing Might Just Be Atoms

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

### What Is Quantum Teleportation?

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.

### Physicists Finally Find a Problem for Quantum Computers Alone

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 Quantum Trick Implied Eternal Stability. Now the Idea May Be Falling Apart.

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.

### Never-Repeating Tiles Can Safeguard Quantum Information

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

### The Year in Physics

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

### The Year in Computer Science

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

### The Quest to Quantify Quantumness

What makes a quantum computer more powerful than a classical computer? It’s a surprisingly subtle question that physicists are still grappling with, decades into the quantum age.