Microsoft presents Majorana 2 at Build, reporting longer qubit lifetimes

Microsoft Quantum/Majorana topological qubits

Microsoft unveiled Majorana 2 at Build, saying a switch from aluminum to lead superconductor made qubits about 1,000 times more reliable. Mean lifetime increased from milliseconds to 20 seconds, with some qubits lasting one minute.

• Switched from aluminum to lead as superconductor material
• 1,000x improvement in qubit reliability
• Mean lifetime: 20 seconds, some qubits last 1 minute (previously milliseconds)
• Expects scalable quantum computer by 2029 using agentic AI tools