Quantum Computing News, PQC News, Quantum Security News & Commentary
What’s Happening in Quantum — and What It Means
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 ...
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 ...
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 ...
Cloudflare’s 1.1.1.1 Now Validates Post-Quantum DNSSEC Signatures – And Shows Why PQC Migration Is a Systems Problem
Cloudflare enabled ML-DSA-44 DNSSEC validation on its 1.1.1.1 resolver. No other major public resolver has announced equivalent support. The move exposes transport, downgrade, and chain-of-trust challenges that will define PQC migration beyond TLS ...
Xanadu and AMD’s Backline Opens a Third Front in the Quantum Control Stack Race
Xanadu and AMD released Backline, an open-source platform that connects quantum control hardware to standard AMD CPUs with sub-3µs round-trip latency. The announcement adds a third architectural option to a control-stack race that includes NVIDIA's NVQLink and Riverlane's QECi ...
Quantum Capability Has Doubled Every One to Two Years. Sandia Says the Early-2030s Roadmaps Need Four Times That.
A Sandia-led team ran identical circuits on Google, IBM and Quantinuum processors, then on a fault-tolerant architecture built from logical qubits. The encoded version reached 2.7% of the raw machine's score ...
Chip-Based QKD Has a Glow Problem: VOA Luminescence Creates a Side Channel That Standard Security Analyses Miss
A peer-reviewed study finds that variable optical attenuators in integrated QKD chips emit unintended light near 1107 nm. The emission creates a wavelength-resolved side channel that standard BB84 security analyses do not account for, and the modeled impact on key rates is severe ...
Quantinuum’s Helix Demonstrates How a Compact Error-Correcting Code Can Compute
Quantinuum's Helix architecture demonstrates logical memory, Clifford computation and an inter-code interface on Helios – all without postselection. The gap between these components and sustained universal computation defines what comes next ...
Fujitsu Built a Diamond-Spin Quantum Prototype. The Numbers That Would Prove It Scales Are Missing.
Fujitsu says it has built the first diamond-spin quantum computer prototype to integrate a tin-vacancy center with an on-chip photonic circuit. The fabrication is real. The scalability metrics that would validate the modular architecture are not yet published ...
Altera Ships ML-DSA Secure Boot on Agilex FPGAs – PQC Reaches the Silicon Root of Trust
Altera began shipping ML-DSA secure boot on its Agilex 3 and Agilex 5 FPGAs on September 8, 2026 – the first general-purpose FPGA family with post-quantum firmware authentication as a production feature, not a roadmap item ...
IonQ Compiles Shor’s Attack on secp256k1 Down to 19,397 Ions and 26 Days per Attempt
IonQ has compiled a full ECDLP-256 attack to a trapped-ion design that does not exist, charging every Clifford, measurement and ion transport. The accounting is the most detailed I have seen. The error rates, cycle time and machine are assumptions ...
Cognition’s Devin Built a GPU Number Field Sieve and Factored RSA-260, Cutting the Price of Breaking RSA-1024 to $30 Million
Eric Lu of Cognition had the Devin agent build a GPU version of CADO-NFS and factored the 862-bit RSA-260 on idle cluster capacity, for about $400,000 of GPU time. Factoring RSA-1024 would cost about $30 million, by his estimate ...
G7 Tells Every Organization to Start PQC Migration – But the Procurement Signal Matters More Than the Headline
The G7 Cybersecurity Working Group's September 2026 call to action urges all organizations to begin PQC migration. The document is guidance, not regulation, but its procurement and supply chain language carries real consequences for enterprises and their vendors ...
