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PostQuantum.com - Marin Ivezic - Articles and news on Quantum Computing, Quantum Security, Post-Quantum, Q-Day, Quantum Cybersecurity.

News

Blog 2 months ago
Google Cloud Put Dates on Its PQC Migration. Signatures Trail Confidentiality by a Year.
Table of ContentsMy AnalysisThe Difference Between a Roadmap and a Negotiated ConnectionSignatures Land a Year Behind ConfidentialityThe Discovery Tool Google Now OwnsRoots of Trust Migrate on Replacement CyclesWhat Would Actually Move These DatesThe Rene
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Blog 2 months ago
I Set Five Tests for Silicon Spin in March. One of Them Was Too Weak.
Table of ContentsIntroductionGrading the FiveWhy the Test Failed, and What Replaces ItThe Line Item Nobody PricesThe Dot Is Not the Whole Density StoryShuttling Electrons to Get Around the Connectivity ProblemBoth Logical Milestones on My March List Came
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Blog 2 months ago
Six Teams Shipped the Same ZK Verifier Bug. Quantum Doesn't Get a Patch.
Table of ContentsIntroductionWhere the Quantum Risk Actually SitsThree Failure Modes, Not TwoZcash Ran the Experiment in JulyNo Regulator Sets the Deadline for a Permissionless ChainThe Lattice Exit Has Its Own ProblemThis Is Trust Now, Forge LaterWhat Fo
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Blog 2 months ago
A New Classic McEliece Distinguisher Undercuts Generic Decoding. It Is Not a Break.
Table of ContentsMy AnalysisHalf of the standing defense just went awayProof-based is not the same as provenThe exabyte problemISO standardized this just over two months agoOne week, two branches, different weatherWhat this changes for a migration program
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Blog 2 months ago
Two QFT Records in Four Months. Neither Gets You Closer to Breaking RSA.
Table of ContentsThe compilation result is the good partTwo records, four months apart, measured differentlyCount the gates, then count the depthWhat the benchmark measuresThe 100-qubit number needs an asteriskShor's algorithm barely uses this partUnitary
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Blog 2 months ago
A Peer-Reviewed CRYPTO 2026 Paper Just Gave ML-KEM's Foundation a New Quantum Target
Table of ContentsWhy This Paper Matters Independently of SimonThe Research MapWhat the Paper ProvesWhat the Paper Does Not ProveThe Uncomfortable Observation About Unstructured LatticesThe ConvergenceWhat This Means for Your Migration August 6, 2026 - Tod
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Blog 2 months ago
Daniel Simon Claims a Polynomial-Time Quantum Algorithm for Lattice Problems. And a CRYPTO 2026 Paper Connects It to ML-KEM
Table of ContentsWhat Simon ClaimsThe Reduction ChainThe Module-LWE linkWhich Algorithms This Would TouchMy AnalysisWhy Simon's paper is not the usual lattice scareFour places the proof could failWhere the verification standsWhat stays the sameHybrid is n
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Blog 2 months ago
Qarakal's Pangaea Architecture Shrinks the Routing Region Tenfold, Not the Machine
Table of ContentsMy AnalysisThe arithmetic Figure 7 leaves outThe headline number is extrapolated past the dataQarakal derived a better number and didn't promote itThe heterogeneous interface has no demonstrated real-time decoderPangaea against the qLDPC
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Blog 2 months ago
D-Wave's First Gate-Model Nature Paper: Why Error Structure Can Beat Error Rate
Table of ContentsGate performance in detailSurface code simulationsContext and concurrent workThe counterintuitive result, examinedWhat the gate actually provesWhat the paper does not proveThe Schoelkopf factorWhere this sits in the CRQC pictureWho else i
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Blog 2 months ago
Quantum Careers in 2026 (No PhD Required)
Table of ContentsIntroductionHow the Talent Gap Changed ShapeHow to Judge Whether a Quantum Career Bet Will HoldModality riskLayer riskDemand-driver riskAI displacement riskDomain Experts and Where the Timing Comes FromQuantum Knowledge as a Multiplier in
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