Physicists have managed to combine several quantum computers into a network that can automatically correct random errors. MIPT called this achievement the main scientific breakthrough of the outgoing year.

Until now, scaling quantum computers seemed impossible, because errors in the operation of such systems are inevitable, and with increasing computing capacity, their percentage became unacceptably large.

“This year, the world’s first experiments were carried out demonstrating the successful scaling of qubit systems with quantum error correction,” said a senior researcher at MIPT Gleb Fedorov.

The mechanism for correcting random failures was invented a long time ago. It is implemented using logical qubits, consisting of several physical qubits connected to each other.

In 2023, several teams of scientists from different countries managed to bring this idea to life and experimentally prove its functionality.

One of the most powerful quantum computers with automatic error correction was built in the USA by the group of Mikhail Lukin, a professor at Harvard University. It consists of 48 qubits.