Microsoft Unveils Majorana 2 Quantum Chip, Targets Commercial Quantum Computer by 2029

Microsoft unveiled Majorana 2, a next‑gen quantum chip delivering a 1,000‑fold reliability boost over its predecessor, at Build 2026. Qubits now sustain 20+ seconds parity lifetime versus 1–12 ms in Majorana 1, thanks to a new lead‑antimony material stack and doubled topological gap. Developed with Azure Quantum’s Discovery AI platform, the chip accelerates materials research. Microsoft targets a commercial quantum computer by 2029, rivaling IBM’s $10B quantum push.