How to Tell a Real Quantum Application From a Marketed One
Five industries have published evidence for quantum advantage. Roughly twenty do not. Three questions, asked in order, separate the two lists before any money…
How to Read China’s Quantum Computing Hardware Record
Two laboratories on Earth have published below-threshold quantum error correction, and one of them is in Hefei. A working method for separating demonstrated capability…
The Machine That Breaks Encryption Won’t Be One Chip
Threat assessments still track one qubit count on one processor. The machine that matters for cryptography looks more like a data center than a…
The Vocabulary of Quantum Security
Quantum security means at least three different things, and vendors use all three. A precise glossary of the terms that carry budget consequences.
Q-Day and Y2K: What the Comparison Gets Right
The Y2K analogy is useful for justifying the budget and misleading about the schedule. Here is which half of it to keep.