Microsoft Unveils Majorana 2 and Halves Its Timeline to a Scalable Quantum Computer by 2029

Microsoft unveiled Majorana 2, a topological qubit it says is roughly 1,000x more reliable than its predecessor, holding quantum information for about 20 seconds rather than microseconds. On that strength Microsoft now expects a scalable quantum computer by 2029, halving its previous timeline and putting another major lab's target in the same 2029-2030 window as Google.