Microsoft’s next-gen quantum chip cuts timeline to useful quantum computing

Microsoft unveiled Majorana 2, an upgraded quantum chip designed to accelerate the timeline for practical quantum computing. The chip replaces aluminum with lead in its material stack and uses a combination of indium arsenide and indium arsenide antimonide, improving qubit stability from 1–12 milliseconds to over 20 seconds—an over 1,000x improvement. Some qubits now exceed a minute in lifetime, a milestone Microsoft claims brings useful quantum computing closer to reality. The company now aims to build a fault-tolerant quantum computer by 2029, halving its previous timeline. Microsoft attributes this progress to the new material stack, which creates a more stable topological phase for qubits. Chetan Nayak, Microsoft’s technical fellow and corporate vice president of quantum hardware, stated that the advancements make scalable, practical quantum computing achievable sooner. To support research, Microsoft released Discovery, an agentic AI tool used in developing Majorana 2, on GitHub. Researchers can access it via GitHub Copilot to streamline quantum computing advancements. The tool’s integration into development workflows marks another step toward making quantum computing more accessible and reliable. Microsoft’s roadmap now focuses on building a prototype quantum computer capable of solving complex global problems. The company emphasizes that Majorana 2’s stability and performance improvements are critical for achieving fault-tolerant quantum systems. With these advancements, Microsoft is positioning itself as a leader in the race toward practical quantum computing.