Deep Dive Series

Long-form research across quantum computing and quantum security

Multi-article series with capstone analyses, interactive tools, and companion databases.

Quantum Systems Integration

Open architecture, modular hardware, and building quantum computers from components

How to Build a Quantum Computer How to Build a Quantum Computer

How to Build a Quantum Computer

Integration guides for assembling quantum computers from modular components. Every major modality covered, from empty lab to first qubit signal, with vendor landscapes and procurement guidance.

What It Takes to Build a QC What It Takes to Build a Quantum Computer

What It Takes to Build a QC

From qubit fabrication through cryogenics, control electronics, and error correction. A component-level breakdown of the supply chain and engineering challenges at each layer.

Quantum Systems Integration & QOA Quantum Systems Integration & QOA

Quantum Systems Integration & QOA

The Quantum Open Architecture model and multi-vendor system design. How independent integrators assemble best-of-breed components into working quantum computers.

Quantum Computing Modalities Quantum Computing Modalities

Quantum Computing Modalities

Superconducting, trapped ion, neutral atom, photonic, silicon spin, and beyond. Every major hardware approach compared on performance, scalability, and commercial readiness.

Quantum Security, PQC Migration & Q-Day

Threat assessment, standards, mandates, migration frameworks, and deadlines

Quantum Computing for Cyber Pros Quantum Computing for Cyber Pros

Quantum Computing for Cyber Pros

An 11-part introduction to quantum computing for security professionals, no physics background required. Amplitudes to Shor, Grover, error correction, and reading vendor roadmaps. Free 114-page ebook included.

CRQC Capability Framework CRQC Quantum Capability Framework

CRQC Capability Framework

The nine engineering capabilities required to build a cryptographically relevant quantum computer. The structured, evidence-based method behind my Q-Day estimates.

Predicting Q-Day Predicting Q-Day

Predicting Q-Day

Frameworks, forecasts, and the data behind competing timelines. Includes the interactive CRQC Readiness Benchmark tool for exploring estimates with your own assumptions.

Getting Started With Quantum SecurityGetting Started With Quantum Security & PQC Migration

Getting Started With Quantum Security

A practitioner’s roadmap from first awareness to active PQC migration. Covers threat assessment, NIST standards, the PQC Migration Framework, and how to build a business case.

Quantum Security Reference Quantum Security Reference

Quantum Security Reference

Essential concepts for security leaders encountering quantum threats for the first time. Algorithms, attack models, and terminology explained without the hype.

PQC Governance & Program Leadership PQC Governance: Program Leadership

PQC Governance & Program Leadership

Who leads PQC migration, how boards govern it, how to fund and execute it. A seven-part Deep Dive for CISOs, boards, and transformation leaders.

Global PQC Migration Timelines Global PQC Migration Timelines

Global PQC Migration Timelines

PQC deadlines are now set across 15+ countries. Maps every mandate, tracks where national requirements diverge, and identifies the compliance gaps that catch multinationals off guard.

CNSA 2.0 Deep Dive CNSA 2.0: NSA's Post-Quantum Requirements

CNSA 2.0 Deep Dive

NSA’s post-quantum cryptography requirements decoded. Required algorithms, enforcement timelines, defense contractor compliance, and what CNSA 2.0 means beyond the NSS.

Quantum Threat to Cryptocurrencies Quantum Threat to Cryptocurrencies

Quantum Threat to Cryptocurrencies

Ten-article series covering quantum resource estimates for breaking Bitcoin and Ethereum, protocol-level fixes, governance bottlenecks, and realistic migration roadmaps.

More Deep Dives

Quantum Sovereignty Quantum Sovereignty

Quantum Sovereignty

Strategic independence in the quantum era. Supply chain dependencies, export controls, and why national quantum strategies are reshaping technology geopolitics.

The Quantum Utility Map The Quantum Utility Map

The Quantum Utility Map

What will fault-tolerant quantum computers actually do? Application areas mapped by qubit requirements, timeline to viability, and projected economic impact.

China’s Quantum Ambition China's Quantum Ambition

China’s Quantum Ambition

Could Beijing win the quantum race? China’s national programs, research output, industrial ecosystem, and the strategic implications for the West.

Quantum Computing CompaniesQuantum Computing Companies & Roadmaps

Quantum Computing Companies

60+ quantum hardware companies profiled and compared across modalities, funding, technical milestones, and commercial readiness. Updated quarterly.

Quantum Snake Oil Dictionary Quantum Snake Oil Dictionary

Quantum Snake Oil Dictionary

A field guide to quantum hype, scams, and misused terminology. Spot exaggerated claims, decode marketing language, and separate real progress from noise.

Articles & Analysis

Quantum Computing, Quantum Security, PQC & Quantum Sovereignty

Air-Gapped Encryption

An air gap is a real security measure and encryption is a real technology, but "air-gapped encryption" welds them into a phrase with no definition — one that papers over a contradiction and overstates what either can do ...

Quantum Apocalypse

The quantum threat to cryptography is real, but "quantum apocalypse" wraps it in language built to sell panic. Q-Day is a migration problem with deadlines, not a sudden collapse, and the difference shapes how you should respond ...

Removes the Attack Surface

Encryption changes where a system's attack surface sits; it does not remove it. A vendor promising zero attack surface is promising something that cannot exist, which is one of the most reliable warning signs in security ...

Zero-Data PQC

"Zero-data PQC" markets the avoidance of data movement as if it were cryptographic protection. But PQC's job is to protect data in transit, which is a separate question from whether your data moves to a cloud during migration ...

RSA Is Already Broken

The claim that RSA is already broken is false, and it is spreading fast. RSA-2048 remains unbroken, the largest number factored by Shor's algorithm on real hardware is 21, and the accurate concern is future risk, not present compromise ...

Undecidable Encryption

Hilbert's tenth problem is genuinely undecidable. That fact has been used to sell "unbreakable" ciphers for three decades, and the ciphers keep falling — because undecidability is the wrong kind of hardness for cryptography ...

AI-Powered Encryption

Artificial intelligence has a real, growing role in cryptography: breaking and stress-testing ciphers. Marketing that claims an AI generates or strengthens your encryption into something unbreakable has inverted how cryptographic security actually works ...

Patented Cryptography

A patent proves an idea is novel and non-obvious. It says nothing about whether the cryptography is secure, because patent examiners are not cryptographers and real assurance comes from open analysis, not a grant number ...

Operational Perfect Secrecy

Shannon's perfect secrecy has a precise meaning and a non-negotiable cost: the key must be at least as long as the message. "Operational Perfect Secrecy" keeps the prestige of the name while relaxing the requirement that justifies it ...

Why the Quantum Attack on ECC Keeps Getting Cheaper, and Where It Stops

An open competition has driven the logical qubits for one secp256k1 point addition into the high 1,100s. The arithmetic says how much further circuit tricks can go, and exactly where they stop ...

Quantum Snake Oil Is Flooding the News Cycle — and the Industry Is Letting It Happen

Three extraordinary quantum claims in two weeks, none peer-reviewed, all tied to commercial events. The quantum industry's credibility problem is accelerating, and the people paying the price are the enterprises trying to make real migration decisions ...

America Just Made the Case for Quantum Sovereignty

Washington ordered two of the most capable AI models offline for every customer on the planet, and it took hours. I keep getting asked why the world wants its own quantum stack. Here is the cleanest answer I have ...

PostQuantum.com AI Explainer

An AI tool that answers questions using a curated corpus of information from PostQuantum.com, NIST, NSA, and ENISA and other reliable sources. Ask anything related to quantum computing or quantum security.

From the author

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