Quantum Computing Cryptographic Threat

[SCAN+TCR] Researchers demonstrated single-ion error correction beyond break-even without measurement or feedback; a separate team ran high-fidelity two-qubit gates in crystals of up to 12 ions.

[SCAN+TCR] Quantinuum reported Helios logical memory fidelity of 99.9995%, cutting logical errors tenfold from its previous result.

[DD+POD] Claude's AI-optimized circuits cut costly gate counts for elliptic-curve and modular-inversion arithmetic, the same operations used in attacks on current wallet and web signatures, though the work remains unverified resource estimates rather than hardware runs.

[DD+TCR] Google's Willow demonstrated magic-state cultivation at 99.99% logical fidelity, reducing errors about 40-fold; stored-state errors remained roughly seven times simulated predictions.

[DD] Anderon released a licensed superconducting-qubit process design kit for 300mm wafer fabrication, enabling groups without their own fabs to design for a foundry.

[DD+POD] Ethereum's Justin Drake urged staged wallet migration; Vitalik Buterin backed preparation and warned AI mathematics could challenge both classical and lattice-based signature assumptions.

[DD] BTQ Technologies and MoonPay Korea announced a post-quantum roadmap and planned quantum-safe signing tests with Korean banks; Woori Bank is the first stablecoin-consortium member.

[SCAN+TCR] IonQ published an end-to-end estimate that a 20,000-qubit fault-tolerant quantum computer could break Bitcoin's secp256k1 signatures in about 26 days, while noting NIST's post-quantum standards ML-DSA and SLH-DSA remain unaffected.

[SCAN+TCR] IBM's Nighthawk r2 quantum processor exceeded 100,000 circuits per second, 25 times Heron throughput, while maintaining comparable gate accuracy on circuits above 7,500 gates.

[DD+POD] The US Treasury launched a Quantum-Readiness Task Force for finance, the Trusted Computing Group published benchmarks distinguishing genuinely quantum-safe hardware, and a live Safeheron pilot began testing NIST's ML-DSA-65 post-quantum signature standard across banks in several jurisdictions.

[DD+POD] Japan activated Shunkai, its first full-stack neutral-atom quantum computer at roughly 50 physical qubits, with a roadmap to 500 then 10,000 qubits by March 2031.

[DD+POD] A Brookhaven-led team sent entangled photons 13 miles through open air using adaptive optics, establishing the first permanent free-space quantum link.

[SCAN+TCR] Pasqal trapped individual atoms using photonic-chip laser control while USTC generated a four-photon, 16-qubit GHZ state on programmable silicon photonics.

[SCAN+TCR] House defense legislation would raise annual US military quantum spending 68% to $567 million amid intensifying competition with China.

[DD+POD] D-Wave demonstrated a roughly 99.9%-fidelity two-qubit gate in 500 nanoseconds, MIT produced wafer-scale air-stable ultrathin superconductors, and DARPA initiated repeatable manufacturing for tactical optical clocks.

[DD+POD] IBM and University of Chicago ran an openly verifiable beyond-classical computation on 70 logical qubits, executing 2,415 logical two-qubit operations and 468 T gates with logical error rates roughly 10× below the physical hardware.

[DD+POD] Claude Mythos weakened post-quantum signature candidate HAWK from roughly 2^64 to 2^38 estimated operations, prompting coordinated disclosure to its authors and NIST.

[DD+POD] Google's Willow processor learned to self-calibrate mid-computation via reinforcement learning trained on its own error-correction signal, cutting logical errors ~20% beyond expert human tuning with optimization speed holding steady as parameter count scaled toward fault-tolerant qubit levels.

[SCAN] Microsoft unveiled Majorana 2 topological quantum chip with qubits 1,000× more reliable than its predecessor (20-second mean lifetime vs. microseconds), moving its commercially useful quantum computing timeline to 2029, converging with IBM's $10B commitment and Google's accelerated cryptographic-readiness deadline on the same target year.

[SCAN+TCR] Quantinuum upsized its IPO to $1.46B: first dedicated quantum computing company achieving public-market pricing, graduating quantum hardware from research capital to institutional investors on the same 2029 timeline IBM committed $10B and Google accelerated its cryptographic-readiness deadline toward.

IBM committed $10B toward a large-scale quantum computer by 2029; MIT and Massachusetts simultaneously launched a shared Quantum Systems Laboratory: capital commitment and regional research infrastructure aligning on the same 2029 capable-quantum threshold Google accelerated toward in April.

Imec's first quantum-dot qubit on High-NA EUV routes quantum hardware through the same lithography investment AI-chip fabs already fund, compressing a previously decade-scale cryptographic-threat timeline by tying quantum production to existing manufacturing capital cycles.

Quantum key distribution system using semiconductor quantum dot single-photon source ran 6+ hours continuously over 120 km of standard telecom fiber at ~15 bits/sec, published in Light: Science & Applications: manufacturable solid-state photon emitter crosses metropolitan-scale deployment threshold.

Google moved post-quantum cryptographic readiness deadline forward to 2029 (from early 2030s), driven by new papers demonstrating significant quantum capability advances; EFF analysis notes vulnerability lies in key exchange and authentication mechanisms; symmetric encryption and stored data not immediately at risk.

Oratomic (Caltech spinoff) and Google independently find P-256 crackable with ~10,000 reconfigurable atomic qubits; prior consensus required millions; Cloudflare (protecting ~25% of internet traffic) cites "renewed urgency"; Scott Aaronson calls findings "quantum computing bombshells."