Quantum Computing News, PQC News, Quantum Security News & Commentary
What’s Happening in Quantum — and What It Means
Germany’s BSI Advises Against New Classic McEliece Deployments After Researchers Estimate Key Recovery Below Its Claimed Security Levels
Less than two months after a new Classic McEliece distinguisher appeared, three research groups estimate key recovery below every claimed security level, and Germany's federal cybersecurity agency wants no new projects built on it. No practical attack exists yet ...
NATO’s First Quantum Roadmap: Sea Trials, a PQC Pilot and No Public Date for Its Own PQC Migration
Allies approved NATO's first quantum technology roadmap in July. Its public summary dates sensor trials, standards work and a cryptography pilot. A separate procurement notice estimates the pilot at €8 million and adds a before-2030 goal ...
In a Survey of 160 Quantum Firms, 90% Buy From Abroad and About a Quarter Buy From China
Six industry associations asked 160 quantum companies where their suppliers, customers and factories are. I separate foreign from home answers in the country counts, then look at China, the competing lists of like-minded countries and what the survey left out ...
Infleqtion Hits 30 Logical Qubits With Error Detection. Its Original 2026 Target Called for Error Correction.
Infleqtion met its 2026 goal of 30 logical qubits on Sqale with eight-atom blocks that detect errors and discard failed runs. The goal it replaced in 2025 called for error correction ...
IonQ Shows a Single Laptop CPU Can Decode a Simulated 408-Logical-Qubit Trapped-Ion Computer in Real Time
IonQ researchers decoded simulated trapped-ion workloads on 12 Apple M4 Max cores, the largest with 408 logical qubits and another with over a million T gates, adding under 0.3% delay at a two-qubit error rate of one in 10,000 ...
China’s Next-Generation Crypto Candidates Drew 104 Public Findings in Three Days. Researchers Broke Five Designs on Day Two
Within three days of China publishing its first-round candidates, public reports listed 104 findings against 65 of them. Saarinen's AI-assisted sweep found code bugs; researchers posting to ICCS's own forums found the design breaks ...
FIPS 140-2 Goes Historical Today – What Actually Changes and What Doesn’t
Every remaining FIPS 140-2 certificate moves to the CMVP Historical list on September 21, 2026. The sunset changes procurement, not operations – but the supply-side gap in FIPS 140-3 validated modules makes the transition harder than the seven-year runway implied ...
Apple Joins the Merkle Tree Certificate Consensus – and Raises the Bar
Apple's Root Program has committed to Merkle Tree Certificates for TLS with requirements that go beyond Chrome's in key respects, while taking the composite-algorithm path for S/MIME – confirming the two-track PKI fork organizations must plan for ...
RSA-896 Factored With Claude on Spare GPUs, 16 Days After RSA-260
Stephen Weis of Anthropic used Claude to port CADO-NFS to GPUs and factored RSA-896 on idle capacity, 16 days after Cognition's RSA-260 record. RSA-2048 remains about 35 billion times harder and needs a quantum computer ...
Physicists in Guangzhou Confirm Feynman’s Path-Integral Rules With Single Photons, but Not That They Take Every Path
South China Normal University physicists measured single-photon propagators at 98.5% fidelity and multiplied them into 1.4 million path amplitudes. Quantum mechanics, its rival interpretations and classical wave optics predict the same propagators ...
Europe’s Chips Act 2.0 Keeps Quantum Pilot Lines but Leaves Quantum Fabrication Out of Its Strategic-Project Priorities
The European Quantum Industry Consortium says the Chips Act 2.0 proposal names quantum foundries without an instrument to build one. I checked its reading of the annexes and set it against what the US government funded in September ...
Every Headline RSA-2048 Estimate Assumes Qubits That Work. A Sydney Team Measured What Happens When They Don’t.
On a single IBM chip, a distance-5 surface code lost to a distance-3 even after the defective components were routed around. The headline estimates of what breaking RSA-2048 takes assume they all work ...
DOE’s $215 Million Q Competition Puts a Price Tag on Fault-Tolerant Quantum Computing – and a Deadline
The DOE's Quantum Genesis Q Competition offers up to $215 million for fault-tolerant quantum computers with at least 100 logical qubits – not physical qubits – by September 2028, paid through milestone payments and equal-split incentive pools ...
UPenn Turns Diamond Crosstalk Into a Four-Qubit Entangling Gate at Room Temperature
University of Pennsylvania researchers generated a four-qubit entangled state inside a diamond at room temperature in 14.8 microseconds – about ten times faster than the sequential approach tested in the same register – by converting crosstalk into parallel conditional gates ...
Surface Code Runs Below Threshold on IBM Heavy-Hex – But Only in One Direction at a Time
Researchers showed that error suppression can work on hardware whose geometry was never designed for the surface code – a result that broadens the viable hardware base for fault-tolerant quantum computing, though full isotropic scaling has not been shown ...
Infleqtion and NVIDIA Build a qLDPC Compiler Pipeline, But the Code Has Not Yet Run on Hardware
Infleqtion integrated its open-source qLDPC library with NVIDIA's new CUDA-Q Logical compiler layer, validating a code that encodes 18 logical qubits in 98 physical data qubits. The software pipeline works. Physical execution is next ...
IBM’s Spacetime PEC Cuts Error-Mitigation Sampling Overhead 63× – But the Exponential Wall Remains
IBM researchers combined probabilistic error cancellation with post-selected error detection, reducing sampling overhead by up to 63× on a 49-qubit subset of IBM's 156-qubit Heron processor. The result extends near-term error mitigation but does not eliminate its exponential cost ...
Altera and Riverlane Validate QECi on Agilex FPGAs – and the Day After, Qblox Closes the Real-Time QEC Loop at 6.9 µs
Riverlane validated QECi on Altera Agilex 7 FPGAs on September 10, and Qblox closed a real-time QEC loop over it the next day using emulated qubit data. QECi is the first purpose-built, open-source, multi-vendor QEC interface stack with closed-loop results ...
