Microsoft Unveils Majorana 2 Quantum Chip With Qubits 1000x More Reliable

Microsoft’s latest announcement related to quantum computing is perhaps its most significant one to date, and the company is confident that its roadmap is advancing far quicker than anticipated. At the Build 2026 conference yesterday, the tech giant unveiled Majorana 2. That’s the next-generation quantum chip, which Microosft says 1,000-fold reliability improvement over its previous design while cutting its long-term quantum computing timeline in half.

Microsoft says its quantum leap just got much bigger

The Majorana 2 is Microsoft’s latest topological quantum computer chip. Per the company, the qubits in the chip are said to remain in their quantum state for much longer periods. Where regular systems have a lifetime measurement of microseconds, the Microsoft design is said to offer an average lifetime of 20 seconds with even some reaching a minute’s worth of time.

Image credit: Microsoft

Such improvements in stability are said to come from a new materials stack design that includes the replacement of essential elements and some new engineering techniques meant to lower any forms of interference on the quantum computations being made. The company claims the result is a quantum system that is now 1,000 times more reliable than before.

That’s not all; Microsoft has also detailed the updated timeline. Thanks to these advances, the company now expects to achieve a commercially valuable scalable quantum computer by 2029. Previously, that goal sat much further out on the roadmap.

AI played a major role behind the scenes

Microsoft also said that agentic AI inside its Microsoft Discovery platform helped accelerate the development process. Engineers reportedly used AI agents to automate measurements, analyze years of research data, optimize fabrication workflows, detect hidden flaws, and even assist with materials research.

Speaking of Microsoft Discovery, the platform is now generally available for organizations, while a free Microsoft Discovery app is entering preview for individual researchers using GitHub Copilot accounts.

Among other news from Build 2026, Microsoft has also announced Project Solara, new Surface RTX Spark Dev Box, Windows 365 with GPU cloud PCs, Coreutils for Windows and built-in WSL Containers.