All Quantum Computing Posts
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Quantum Computing
Everything Called a Decoder in Quantum
A syndrome decoder has to keep pace with a microsecond syndrome stream. A syndrome decoding problem has to stay infeasible forever. Same two words, opposite requirements, and coverage that routinely cannot tell them apart.
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Quantum Computing
The GSMA’s Telco Quantum Playbook Misreports the McKinsey Report It Cites
A trade body published a vendor-contributed document, and the one exhibit anyone could verify turned out to misreport the report it names. What that costs the operators who will quote it in board papers.
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Quantum Computing
The Merchant QPU Market – Who Will Actually Sell You a Quantum Processor
Strip away cloud access and turnkey machines and the number of companies that will sell a quantum processor for third-party integration drops to six. An audit of the merchant market, with prices, specs, and the gaps.
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Quantum Computing
I Set Five Tests for Silicon Spin in March. One of Them Was Too Weak.
Two cleared, one partial, one open, and one that HRL passed as written while leaving the thing it was meant to measure exactly where it was in March.
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Post-Quantum, PQC, Quantum Security
Two QFT Records in Four Months. Neither Gets You Closer to Breaking RSA.
Two compilation teams claimed the largest quantum Fourier transform ever run, four months apart, on the same IBM chip. Their circuits and metrics are not comparable, and the gate counts explain why.
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Quantum Computing
Quantum Careers in 2026 (No PhD Required)
An updated map of quantum careers: what each role involves day to day, who hires for it, what employers screen for, and how to judge whether a specialization will still exist in ten years.
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Quantum Computing
DARPA’s Most Rigorous Quantum Evaluation Is Led by Its Least Proven Contenders
Neither Stage C company has publicly demonstrated a logical qubit on the architecture DARPA is evaluating. One may not have demonstrated a physical qubit. That outcome tells you more about the program's design than about the technology.
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Quantum Computing
Every Quantum Vendor Measures Progress Differently. That’s the Point.
Quantum vendors report different measures of scale, fidelity, throughput, and logical performance. Each number may be valid, but together they do not form a common scoreboard. Here is why that matters.
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