Microsoft Extends Majorana 2 Qubit Lifetime to 20 Seconds, Targeting 2029 Fault-Tolerant Machine
Updated
Updated · Tech Times · Jun 7
Microsoft Extends Majorana 2 Qubit Lifetime to 20 Seconds, Targeting 2029 Fault-Tolerant Machine
3 articles · Updated · Tech Times · Jun 7
Summary
Microsoft said its Majorana 2 topological chip held a qubit state for a mean of 20 seconds, with some measurements reaching 1 minute — a more than 1,000-fold jump from earlier millisecond-scale devices.
Lead replacing aluminum in the superconducting stack drove much of the gain, while a redesigned semiconductor structure lifted the topological gap to about 70 microelectronvolts from roughly 30, making parity errors far less frequent.
The company said parity-switching times now exceed qubit-operation times by more than 7 orders of magnitude, implying millions of operations could run before a parity error is expected and strengthening the case for fault tolerance.
Microsoft argues the result lets it halve its timeline for a scalable quantum computer to 2029, but the device is still a small prototype, the work is not yet peer-reviewed, and physicists remain divided over the underlying Majorana claims.
The advance fits a broader early-June shift across quantum computing toward reliability rather than raw qubit counts, with faster photonic control, optical supply-chain buildout and FPGA-ready decoders all aimed at practical error correction.
As multiple quantum technologies claim progress, which path will actually deliver a commercially useful machine first?
Is the quantum computing race a true engineering revolution or a bubble fueled by billions in funding?
With quantum breakthroughs accelerating, is the world's transition to new cryptography happening fast enough to avert 'Q-Day'?
Majorana 2: Microsoft’s 1,000x Quantum Leap and the Race for Fault-Tolerant Computing
Overview
On June 2, 2026, Microsoft announced a major leap in quantum computing by unveiling the Majorana 2 quantum chip, claiming a dramatic breakthrough in qubit stability and technology. Chetan Nayak highlighted a '1,000 times better' improvement over the previous year, stressing the need for ongoing progress to achieve a quantum computer with significant commercial and societal value. Majorana 2 builds on the earlier Majorana 1 chip, which faced skepticism due to its reliance on theoretical states of matter. Microsoft's approach centers on topological qubits, aiming to overcome past doubts and move closer to practical quantum computing.