OpinionMicrosoft’s and Google’s Quantum Computing Claims Add to Consumer Confusion:
Schrödinger’s cat is scratching its head over the “topological” qubit that is ...
scientificamerican.com/article/microsofts-and-googles-quantum-computing-claims-add-to-consumer-confusion/
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Quantum Computing: Big Claims, Unclear EvidenceMicrosoft’s processor announcement remained disputed because a Nature note said Majorana zero modes were not definitively demonstrated.
Key FactsJun 3, 2025 · Reading time: ~45 sec.
Summary created with AI assistance · Source: scientificamerican.com
Summary created with AI assistance · Source: scientificamerican.com
- Microsoft announced a topological quantum computer in February 2025, but a Nature peer-review note said the study had not definitively demonstrated Majorana zero modes.
- Google unveiled its 105-qubit Willow chip in December 2024, after which Mark Zuckerberg voiced doubts and quantum-computing stocks fell.
- Amazon announced the nine-qubit Ocelot chip at the end of February 2025, using a superconducting resonator and photon-controlled, error-tolerant cat qubits.
- No clear winner has emerged among the competing technical approaches, and scaling them to about one million qubits remains uncertain.
The Majorana 1 processor offers a clear path to fit a million qubits on a single chip that can fit in the palm of one’s hand.— Microsoft (from a press release about the Majorana-1 processor)
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Key FactsQpiAI plans 64-qubit machine for 2026–27
Jul 18, 2025 · Reading time: ~45 sec.
Summary created with AI assistance · Source: financialexpress.com
Summary created with AI assistance · Source: financialexpress.com
- Founded in 2019 by Dr. Nagendra Nagaraja, QpiAI combines artificial intelligence with quantum computing for enterprise applications, including materials science and drug discovery.
- In April 2025, QpiAI unveiled QpiAI-Indus as India’s first full-stack quantum computing system, using 25 superconducting qubits.
- The company aims to deliver a 64-qubit machine, codenamed “Kaveri,” by late 2026 or early 2027, with client access proposed soon afterward, and cites 1,000 qubits by 2030 as a long-term target.
- According to the report, the funding round was supported by Avataar Ventures and the National Quantum Mission, whose programme launched with a $750 million budget.
When we get to about 50 logical qubits, that's when we start hitting true quantum advantage.— Jason Zander, Microsoft's executive vice president, discussing the significance of achieving 50 logical qubits in quantum computing.
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