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

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 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

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

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


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

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 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

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

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

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: 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

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

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

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

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


Quantum 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

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

Financing the Quantum Leap: Funding Strategies for University Spin‑offs

In the end, funding a quantum leap is about building bridges – between lab and market, between public and private interests, and between today’s prototypes and tomorrow’s transformative industries. Each dollar raised and each partnership forged is like adding a ...

AI and Quantum Sensing: A Perfect Synergy

AI and quantum sensing complement each other perfectly. Quantum sensors provide the rich, nuanced data about physical reality at its smallest scales; AI provides the means to interpret and act on that data in real time. This synergy is already ...

Quantum Use Cases in Telecom

Quantum computing’s impact on global telecommunications will be transformative. It holds the potential to revolutionize how we secure and operate networks, enabling levels of performance and protection previously unattainable​. At the same time, it forces a reckoning with the vulnerabilities ...

Quantum of Flapdoodle: A Guide to Quantum Hype and Scams

The gap between the hard reality of quantum engineering and the sensational way it’s often portrayed has created a fertile breeding ground for misinformation and fraud. It ranges from innocuous exaggeration, to willful marketing spin, to serious financial scams and ...

Quantum Use Cases in Healthcare & Medical Research

Quantum computing has the potential to reshape global healthcare and medical research in the coming decades. From our current vantage point, we can see glimmers of its future impact: prototype quantum algorithms already accelerating drug discovery, early collaborations bringing quantum ...

Hybrid Cryptography for the Post-Quantum Era

By combining classical and post-quantum cryptographic primitives in tandem, hybrid schemes provide defense-in-depth during this transition period. In practice, a hybrid approach might mean performing both a traditional elliptic-curve key exchange and a post-quantum key exchange inside the same protocol, ...

Quantum Key Distribution (QKD) 101: A Guide for Cybersecurity Professionals

Quantum Key Distribution (QKD) is a cutting-edge security technology that leverages quantum physics to enable two parties to share secret encryption keys with unprecedented security guarantees. Unlike classical key exchange methods whose security rests on computational assumptions, QKD’s security is ...

First Successful Factorization of RSA-2048 by Quantum Computer? Not Even Close!

Chinese researchers published “A First Successful Factorization of RSA-2048 Integer by D-Wave Quantum Computer.” To get straight to the point - the title is misleading. The authors did NOT factor a general RSA-2048 key (as used in real cryptography); instead, ...

Entropy-Driven Photonic Quantum Computing: A Critical Look at QCI’s Approach

Quantum Computing Inc. (QCI) has introduced an unconventional paradigm in quantum computing called Entropy Quantum Computing (EQC). Unlike the standard approach of isolating qubits in pristine, ultra-cold environments, QCI’s method intentionally embraces environmental noise and loss as part of the ...

From NISQ to FTQC to FASQ

The dream of quantum computing is inching closer to reality, but between our current noisy prototypes and tomorrow’s transformative machines lies a daunting gulf. In the language of the field, we are transitioning from the NISQ era into the realm ...

China’s Quantum Computing and Quantum Technology Initiatives

In little over a decade, China transformed from a minor player into a quantum technology powerhouse. The talent has matured, and a new generation of Chinese quantum scientists is coming into its own – many trained at top universities domestically ...

NSA Updates CNSA 2.0 Guidance After NIST Finalizes Post-Quantum Standards

The updated FAQ locks in ML-KEM-1024 and ML-DSA-87 as the only approved public-key algorithms, excludes SLH-DSA entirely, and lays out enforcement timelines that start biting in 2025 ...

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.