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Q-Day Knowledge Center & Q-Day Framework and Estimator

Q-Day Knowledge Center - Your complete guide to understanding, forecasting, and preparing for quantum decryption ...

Quantum Hardware Companies and Roadmaps Comparison

With so many quantum hardware roadmaps landing recently, I’ve updated my running comparison of the ...

Getting Started With Quantum Readiness and PQC Migration

Getting Started With Quantum Readiness and PQC Migration ...

Anthropic’s Mythos Preview and the End of a Twenty-Year Cybersecurity Equilibrium

8 Apr 2026 – Anthropic yesterday announced Claude Mythos Preview, a frontier AI model that can autonomously discover and exploit zero-day vulnerabilities in every major operating system and every major ...

Cloudflare Joins Google: Two Internet Giants Now Say 2029 for Post-Quantum Migration

7 Apr 2026 – Cloudflare, the infrastructure company that handles a significant share of global internet traffic, today announced it is accelerating its post-quantum cryptography roadmap and targeting 2029 for ...

QuiX Quantum Achieves First Below-Threshold Error Mitigation in Photonic Quantum Computing

5 Apr 2026 - QuiX Quantum, a Netherlands-based photonic quantum computing company, announced it has demonstrated below-threshold error mitigation on a photonic quantum computer for the first time, in collaboration ...

Quantum Threat Timeline Report 2025: Record Predictions, But Can the Survey Keep Up?

5 Apr 2026 - The Global Risk Institute (GRI) and evolutionQ Inc. have published the seventh edition of their annual Quantum Threat Timeline Report, the longest-running expert survey dedicated to ...

Gauge Theory Meets Quantum Computing

April 2, 2026 - Dr. Dominic Williamson of the University of Sydney and Theodore Yoder of IBM have published a new method for performing fault-tolerant logical measurements on quantum error-correcting ...

QuantumShield360 AI Achieves World’s First Complete Post-Quantum Cryptography Migration — Full Quantum Resilience Across All Enterprise Systems

Scottsdale, AZ — April 1, 2026 — QuantumShield360 AI, a next-generation quantum-resilient cybersecurity platform leveraging AI-powered lattice synergies, today announced it has completed a full, end-to-end migration to post-quantum cryptographic ...

10,000 Qubits to Run Shor’s Algorithm

31 Mar 2026 - On the same day that Google Quantum AI published its landmark ECDLP-256 resource estimates showing fewer than 500,000 superconducting qubits could break cryptocurrency cryptography in minutes, ...

Google Quantum AI Achieves 10x Reduction in Resources to Break Bitcoin’s Cryptography

31 Mar 2026 - Google Quantum AI has published a 57-page whitepaper demonstrating that the quantum resources needed to break the elliptic curve cryptography protecting Bitcoin, Ethereum, and virtually every ...

The U.S. Intelligence Community Just Put Quantum on Equal Footing with AI. And Expanded the Threat Definition

27 Mar 2026 - Every March, the Office of the Director of National Intelligence publishes a document that most Americans will never read but that quietly shapes trillions of dollars ...

Google Just Drew a Line in the Sand: PQC Migration by 2029

25 Mar 2026 - The company building the quantum computer is telling you the clock is running out. That should get your attention. On March 25, 2026, Google published a ...

Silicon Crosses the Logical Threshold: First Universal Logical Operations Demonstrated in a Silicon Quantum Processor

24 Mar 2026 - In 1998, Bruce Kane published a single-page proposal in Nature that launched an entire subfield of quantum computing. The idea was elegant: use the nuclear spins ...

The 1,000-Qubit Ceiling That Probably Isn’t

21 Mar 2026 - A curious thing happened in cybersecurity Slack channels and LinkedIn threads over the last few weeks: security professionals who had been dragging their feet on post-quantum ...

Marin Ivezic My name is Marin Ivezic. This is my personal blog. I am the Founder of Applied Quantum; former Fortune Global 500 CISO/CTO, Big 4 partner, and APAC & global leader at Accenture and IBM. I served on multiple boards as a NED, and I invest in cutting-edge quantum startups.

My work has always been focused on emerging‑tech risk – building and leading innovation labs focused on quantum security, AI security, and cyber-kinetic risks for global corporations, governments, and defense. I regularly share insights on quantum technologies and emerging‑tech cybersecurity. More about me

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Applied Quantum is the first professional services firm dedicated to quantum technologies across computing, communications, sensing, and simulation. We deliver quantum-focused end-to-end advisory, R&D, and systems integration.

On the security front we execute cryptographic inventories and cryptographic bills of materials (CBOMs), build enterprise crypto agility, plan and deliver PQC migrations and hybrid patterns, and design quantum safe networks (including QKD where warranted), with governance and compliance built in.

The result is a de-risked path from exploration to business outcomes – without hype or lock in.

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My Most Popular Quantum Tech, Quantum Computing, Quantum Security, PQC Articles This Week

    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.