Quantum Computing News, PQC News, Quantum Security News & Commentary
What’s Happening in Quantum — and What It Means
Theorists Prove Passive Quantum Memory Works in Three Dimensions, Settling a 25-Year-Old Question
A Caltech–UCSD team has constructed a 3D quantum system that can store a qubit for exponential time without active error correction. The result settles a question that has resisted the field's best efforts for a quarter century ...
A Viral Paper Claims Lattice-Based PQC Has “Fundamental Limitations” — The Arguments Are Old and the Conclusion Is Wrong
A Seoul National University paper arguing lattice-based cryptography has "fundamental limitations" is generating alarming headlines. The theoretical points are valid but well-known. What the paper actually demonstrates is why PQC migration should accelerate, not stall ...
China’s Hanyuan-2 “Dual-Core” Quantum Computer: Clever Marketing, Missing Benchmarks
CAS Cold Atom Technology's Hanyuan-2 uses two rubidium isotope arrays and calls itself the world's first dual-core quantum computer. The framing is clever. The missing performance data tells a different story ...
Cisco Introduces a Universal Quantum Switch — and It Works at Room Temperature
Cisco’s research prototype can route quantum information across encoding modalities at room temperature on standard telecom fiber ...
IonQ’s Q-Day Claim: What the Earnings Call Actually Said vs. the Panic It’s Feeding
IonQ's CEO told investors the company will reach the logical qubit count to "challenge RSA-2048" by 2028–2029. That's not the same as breaking encryption, and the Q-FUD machine is already running at full speed ...
Project Eleven Publishes 110-Page Quantum Threat Report for Blockchains — Rigorous Analysis Amid a Season of Denial
Two days after pseudoscience was pitched from Bitcoin's biggest stage to deny the quantum threat, Project Eleven published 110 pages of rigorous analysis showing exactly why that denial is dangerous ...
QuantWare Raises $178M Series B — What It Means for Quantum Open Architecture
QuantWare's $178M Series B is the largest private round ever raised by a dedicated quantum processor company. With Intel Capital and IQT on board, the bet is clear: the quantum industry's future is modular, open, and manufactured at scale ...
Q-CTRL Achieves Practical Quantum Advantage — and the Business Signal May Be Bigger Than the Physics
Q-CTRL's 120-qubit simulation of the Fermi-Hubbard model achieves quantitative accuracy matching classical benchmarks while completing in minutes rather than days. The "practical quantum advantage" claim deserves scrutiny, but the underlying technical achievement is real ...
Quantum Computing Simulates 12,635-Atom Protein — Largest Ever
Using two IBM Heron processors, the Fugaku supercomputer, and a refined embedding workflow, researchers modeled protein-ligand complexes in solution at a scale 40 times larger than their previous result — four months earlier ...
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 ...
