Microsoft’s new Majorana 2 quantum chip claims dramatic breakthrough in qubit stability

Microsoft Corp. has announced an updated chip for quantum computing called Majorana 2 that’s said to be 1,000-times more reliable in terms of qubit stability. According to the company, it opens the door to a much faster path towards building commercially viable quantum computers.

Intriguingly, Microsoft said it developed the new chip with the assistance of its agentic artificial intelligence research platform Microsoft Discovery, which uses autonomous agents to accelerate complex research. The company believes it’s now on track to build a scalable quantum computer as early as 2029, slashing its previous timeline in half.

The new chip leverages the same topological quantum computing approach that Microsoft pioneered one year earlier with the introduction of Majorana 1. However, it’s based on an updated materials stack that provides much more stable qubits, which are the fundamental building blocks of quantum computers.

A path to quantum stability