Fault-tolerant quantum computing: Novel protocol efficiently reduces resource cost
phys.org/news/2026-01-fault-tolerant-quantum-protocol-efficiently.html
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Key FactsQuantum Computers: Promise Despite Fragile Qubits
Dec 12, 2025 · Reading time: ~45 sec.
Summary created with AI assistance · Source: nist.gov
Summary created with AI assistance · Source: nist.gov
- Quantum computers use qubits that can exist in superpositions and become entangled with one another, rather than classical bits.
- The most advanced quantum computers currently have hundreds of interconnected qubits and make an error roughly once in every thousand operations.
- Scientists hope for applications in molecular and materials simulations, complex optimization problems and analysis of encrypted data, but most remain years or decades away.
- The article says a quantum computer running Shor’s code-breaking algorithm might require millions of qubits operating error-free indefinitely, while today’s systems mainly serve research and testing purposes.
"It seems to me we're just on the threshold of quantum systems doing genuinely new simulations that we can't do classically," says Glancy. "It might inspire a revolution in physics. In my opinion that is a good reason to build a quantum computer."— Scott Glancy, a physicist at NIST, quoted in the NIST article Quantum Computing Explained
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A low-cost protocol enables preparation of magic states and fault-tolerant universal quantum computation
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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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