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Quantum Commercialization
Nobody Checked the Physics: How Venture Due Diligence Went Missing Where the Checks Are Largest
On Carta's platform the median startup waits 774 days for a Series A. The hottest deep-tech deals close in days on no product. Between those numbers is where nobody can see the physics checked, and quantum is paying for it.
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Systems & Engineering
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.
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Quantum Security & PQC
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.
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Quantum Security & PQC
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.
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Quantum Security & PQC
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.
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Post-Quantum, PQC, Quantum Security
One Quantum Threat, Many Migrations: How and Why PQC Programmes Are Diverging Around the World
Fresh from GISEC in Dubai and ahead of a keynote in Maryland: the same quantum threat is being managed very differently across the US, Europe, the Gulf and Asia, and each migration has produced something the others could use.
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Quantum Computing
Data Centers in Space Don’t Work. Quantum AI Data Centers in Space Are an Absurdity.
An investor asked me to evaluate a pitch for quantum AI data centers in orbit. The physics, the engineering, and the economics all say the same thing: no.
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Quantum Security & PQC
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.
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Research
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.
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Systems & Engineering
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.
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Systems & Engineering
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.
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Post-Quantum, PQC, Quantum Security
PQC Migration Framework v3.0: Build the Ability to Change Again
Crypto-agility is now the method, and the PQC migration is the first exercise of it. The program closes when the organization can change algorithms on a date it chooses. Two companion frameworks publish alongside version 3.0.
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AI Security
Alignment Is Whether AI Wants to Kill Us. Cybersecurity Is Whether We Let It.
The people who build frontier AI ask how a model could ever take power. The July 2026 intrusions answered the first step and half of the second. The rest run through controls organisations already own and already fail at.
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Research
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.
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Systems & Engineering
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.
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