Where quantum computing genuinely stands in 2026, past the press releases: why physical qubits are not logical qubits, what Google's below-threshold result actually proved, an honest read of the IBM, Google, and Quantinuum roadmaps, the difference between quantum advantage and quantum utility, and the real timeline before a quantum computer can break the cryptography you use today.
Error-Correction
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The Quantum Computing Reality Check -
ECC for Flash: Hamming to LDPC Raw NAND ships with thousands of bit errors per page and would be unusable without error correction. This is the story of how ECC evolved from single-bit Hamming through BCH to soft-decision LDPC, what "soft bits" physically are, and the UBER math that turns a noisy die into a reliability promise.