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

Neurodiversity in Cybersecurity

The cybersecurity industry is constantly evolving, facing new threats and challenges every day. To stay ahead of the curve, protect sensitive information, and protect lives (in case of cyber-kinetic risks), the industry requires a diverse range of skills, perspectives, and ...

Organizational Bullshit: The Hidden Corporate Menace

“Organizational bullshit” is a term coined to describe deceptive, vague, or otherwise misleading communication within an organization.  “Organizational bullshit” is not an expletive. It is a legitimate academic term and the subject of serious and growing academic research on leadership ...

Next-Generation QKD Protocols: A Cybersecurity Perspective

Traditional QKD implementations have demonstrated provably secure key exchange, but they come with practical limitations. To address these limitations, researchers have developed next-generation QKD protocols. These advanced protocols improve security by reducing trust assumptions and mitigating device vulnerabilities, and they ...

Attacks on Models That Learn While You Watch

Real-time inference and online learning are different architectures with different threat models. Where attacker-influenced data can reach a parameter update, two research groups now find that sequence decides whether poison takes hold, not volume ...

Securing Society 5.0

A term first coined by the Japanese government, “Society 5.0” describes "A human-centered society that balances economic advancement with the resolution of social problems by a system that highly integrates cyberspace and physical space." The fifth evolution of the society, ...

Part 11: Reading the Field Like a Professional

The series closes by turning ten parts of physics into working equipment: how resource estimates move, which milestones matter, the standing answers to the questions you will be asked, and the deadline that was never Q-Day ...

Part 10: The Machine Itself

Part 10 builds the machine every earlier part assumed. Decoherence is the environment measuring your qubits uninvited, error correction checks integrity without reading the data, and the number in the headline is almost never the number that matters ...

Part 9: Grover and the Honest Speedup

Part 9 covers the algorithm that attacks everything Shor cannot. Grover's quadratic speedup is real, provably optimal, and far weaker in practice than the halving figure suggests, for a reason NIST wrote into its own standards ...

Part 8: Shor: Cryptanalysis by Physics

Part 8 aims the four-move template at RSA: factoring becomes period-finding, the quantum Fourier transform reads the period through interference, and the same move takes down ECC and Diffie-Hellman. Plus the honest 2025 resource math ...

Part 7: The Shape of a Quantum Algorithm

Part 7 assembles the toolbox into the only recipe that works: prepare, imprint, interfere, measure. Deutsch's one-qubit algorithm runs the whole shape by hand, and the closing transform explains why structure is the entry fee ...

Part 6: Correlations Without a Mechanism

Part 6 defines entanglement with four amplitudes and a factorization test, grants the gloves objection its full due, then breaks it with Bell's arithmetic: a shared recipe scores one-third, the qubits score one-quarter. Nothing communicates ...

Part 5: Vast State, Narrow Door

Part 5 scales to many qubits: 2^n amplitudes of workspace behind a single n-bit measurement. Holevo's bound, the no-cloning theorem, a failed copier that entangles instead, and the long-awaited autopsy of "tries every answer at once." ...

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

Quantum Academy – training and certification for the quantum workforce