Quantum Computing News, PQC News, Quantum Security News & Commentary
What’s Happening in Quantum — and What It Means
IBM’s Quantum Advantage Claim: What the Heron-Fugaku Experiment Actually Shows
IBM says quantum advantage arrives in 2026. A new Heron-Fugaku experiment provides the evidence. Whether it proves the claim depends on how you define “advantage.” ...
Scott Aaronson Sounds the Alarm: “This Post Is Your Warning”
The inventor of BosonSampling and new NAS member says reputable QC hardware experts now tell him a cryptanalytic quantum computer should be possible by around 2029 ...
Washington’s Quantum Policy Machine Grinds Forward: NQI Reauthorization, Cybersecurity Preparedness Act, and a Pentagon Migration Guide
Three U.S. policy moves — NQI reauthorization, a quantum cybersecurity bill, and a Pentagon migration guide — show Washington building plumbing for the quantum transition ...
IonQ Publishes Complete Fault-Tolerant Blueprint for Trapped Ions “The Walking Cat Architecture”
IonQ's 110-page preprint details a complete fault-tolerant quantum computer architecture built entirely on qLDPC codes. The numbers are impressive, but every claim rests on hardware that doesn't yet exist at scale ...
Chinese Researchers Cut ECC Qubit Requirements to 1,333 with Open-Source Circuits
A Tsinghua–Peking University team achieves 1,333 logical qubits for ECC-256 with fully explicit, open-source quantum circuits. The gate count may matter more than the qubit count ...
Coinbase Quantum Paper: What It Gets Right, Wrong, and Misses
Coinbase assembled heavyweights like Scott Aaronson and Dan Boneh to assess quantum threats to crypto. Their paper is serious, measured, and technically sound. But it underestimates how fast the ground is shifting beneath blockchain cryptography ...
Nature Reviews Publishes the Definitive CMOS–Spin Qubit Compatibility Assessment
A comprehensive review from Dzurak's team maps exactly where silicon spin qubits align with existing CMOS manufacturing — and where they diverge. The implications for scaling to millions of qubits are more nuanced than the headlines suggest ...
IonQ Photonic Interconnect: First Networked Commercial Quantum Computers
IonQ's photonic interconnect demonstration links two commercial quantum computers via entanglement for the first time. The milestone is real and strategically important - but the absence of fidelity and rate numbers in the announcement demands closer scrutiny ...
QuEra Achieves 2:1 Physical-to-Logical Qubit Ratio With Ultra-High-Rate qLDPC Codes
A QuEra–Harvard–MIT collaboration demonstrates qLDPC codes that encode more logical qubits than they consume in overhead — a 2:1 physical-to-logical ratio that enters the Teraquop regime. This is a simulation result, not an experiment. But if it holds up, it rewrites the economics of fault-tolerant ...
McKinsey Quantum Technology Monitor 2026: “A Commercial Tipping Point” — But the Numbers Deserve Scrutiny
McKinsey’s 2026 Quantum Technology Monitor declares a “commercial tipping point.” The market analysis is useful, but the investment figures still deserve scrutiny ...
QED-C Reports $1.9 Billion Quantum Market as Venture Capital Nearly Triples and Workforce Pivots to Commerce
QED-C's State of the Global Quantum Industry 2026 report shows $1.9 billion in total quantum revenue, venture capital up 192%, and a workforce shifting from research roles to operations and sales ...
Meta Publishes Its PQC Migration Playbook. And It’s the Most Detailed Hyperscaler Account Yet
Meta’s PQC migration playbook introduces “Migration Levels” as an operating model and describes post-quantum protections already live across internal traffic ...
NVIDIA Ising: Open AI Models for Quantum Calibration and Error Correction
NVIDIA's Ising family brings AI-driven automation to quantum calibration and error correction decoding — two bottlenecks standing between today's noisy qubits and fault-tolerant quantum computers. The strategic play underneath matters more than the benchmarks ...
DARPA Launches HARQ Program to Build Heterogeneous Quantum Architectures
DARPA has launched the HARQ program with 19 teams working to combine different qubit types into unified systems — the same heterogeneous vision that I was writing about many times ...
Cisco Research Proves That One Post-Quantum Layer Can Protect Payload Confidentiality — But Authentication Requires Migrating Every Layer
A Cisco Research paper proves that one post-quantum layer suffices for payload confidentiality but every layer must migrate for authentication — and that upgrading to WPA3 worsened quantum security ...
Harvard’s Cascade Neural Decoder Cuts Quantum Error Rates 17×, Reveals Waterfall Effect
Harvard's Cascade decoder achieves logical error rates 17× below the best existing decoders on quantum LDPC codes and reveals a "waterfall" regime of error suppression that could reduce the physical qubit count required for a CRQC by 40% or more ...
Architecture Matters as Much as the Algorithm: Q-CTRL’s Heterogeneous Quantum Computer Design Cuts RSA-2048 to 190k-381k Qubits
9 Apr 2026 - Researchers at Q-CTRL, a quantum infrastructure software company headquartered in Los Angeles and Sydney, have published a paper introducing Q-NEXUS, a heterogeneous quantum computing architecture that claims to reduce the physical qubit requirements for factoring 2048-bit RSA integers to as few ...
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 web browser. Alongside the model, Anthropic launched Project Glasswing, a defensive coalition including Amazon Web ...
