Key Highlights
- At Build 2026, Microsoft introduced the Majorana 2 quantum chip with a 2029 roadmap for commercially viable quantum computing systems
- The new chip replaces aluminum with lead-based superconductors, achieving a 1,000x performance boost on select benchmarks
- Qubit count increased from 8 to 12, while coherence time extended from less than 12 milliseconds to more than 20 seconds
- Academic physicists have questioned Microsoft’s transparency, citing insufficient public verification data
- MSFT shares traded at $441.31, down 4.17%, with GuruFocus suggesting approximately 20% undervaluation
Microsoft has taken a significant step forward in quantum computing. During its June 2 Build 2026 conference, the tech giant revealed the Majorana 2 chip while announcing plans to deliver a commercially practical quantum computer within three years.
Shares of MSFT fell 4.17% to $441.31 following the announcement.
The Majorana 2 represents the second generation of Microsoft’s quantum architecture, launched one year after its predecessor. The upgraded chip features 12 qubits compared to the original’s 8, while achieving a remarkable stability improvementâextending qubit coherence time from under 12 milliseconds to beyond 20 seconds. This advancement addresses one of quantum computing’s most persistent challenges: maintaining quantum states long enough to perform useful calculations.
Microsoft’s 2029 target aligns with IBM‘s quantum computing roadmap. Last month, IBM announced a $10 billion investment in quantum research and established a standalone chip division with backing from the Trump administration.
Why Lead Changes Everything
The transition from aluminum to lead superconductors represents the most significant technical innovation in Majorana 2. This material swap involves more than incremental refinementâlead atoms possess different quantum properties due to their larger atomic structure. Microsoft credits AI-powered materials science platforms for solving lead’s manufacturing challenges, particularly its water solubility that complicates chip fabrication.
Jason Zander, Microsoft’s executive vice president leading quantum initiatives, identified this as the critical innovation. The company reports achieving a 1,000x improvement on specific performance indicators. “The reason why people don’t use it to build chips is it requires an incredibly specialized process,” Zander explained. “We figured it out.”
Microsoft’s quantum strategy depends on Majorana quasiparticlesâexotic quantum phenomena that remained unconfirmed until Microsoft claimed their detection. This assertion continues to generate debate within the scientific establishment.
Scientific Skepticism Emerges
The announcement has drawn criticism from portions of the physics community. Researchers like Henry Legg from the University of St. Andrews argue that Microsoft hasn’t provided adequate data for independent scientific validation. The journal Science announced in 2024 that it was reassessing data from a 2020 Microsoft quantum paper, and critics maintain that transparency issues continue with recent publications.
Microsoft defends its limited disclosures by citing proprietary technology concerns while noting that detailed findings have been shared privately with DARPA for evaluation alongside competing quantum technologies.
“We’ve done enough of the physics to really have great data,” Zander stated.
GuruFocus assigns MSFT a GF Score of 97 out of 100, with maximum 10/10 scores across profitability, growth, and valuation categories. The stock’s P/E ratio of 26.27x trades below its five-year median of 34.15x.
Insider transaction data from the past three months reveals zero purchases, while insiders sold $5.6 million worth of shares.
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