Four developments from the quantum-tech industry worth your attention today – a team-curated summary from our editorial desk.
AI Model Cracks NIST Post-Quantum Signature Candidate HAWK
Anthropic said its Claude Mythos Preview model discovered an improved mathematical attack against HAWK, a digital-signature scheme competing in the National Institute of Standards and Technology (NIST)‘s post-quantum cryptography standardization process. Working semi-autonomously for about 60 hours at a cost of roughly $100,000 in compute, Mythos found a previously unexploited symmetry in the lattice structure underlying HAWK that effectively halves the scheme’s expected key strength, prompting its developers to withdraw HAWK from consideration. Anthropic said the attack does not affect any deployed systems or other NIST post-quantum candidates, and that it coordinated disclosure with HAWK’s authors and government and industry partners before publishing.
Source: Anthropic
Northwestern Demonstrates Quantum Internet Over Live Telecom Fiber
Researchers at Northwestern University sent entangled photons through a 24.4-kilometer commercial fiber-optic cable linking Evanston and downtown Chicago while the same fiber simultaneously carried up to 36 terabits per second of ordinary internet traffic, preserving entanglement fidelity above 94%. Led by electrical engineering professor Prem Kumar, the team shifted the fragile quantum signals into a quieter slice of the optical spectrum to keep them from being drowned out by conventional data — the first demonstration of entanglement distribution over a fiber carrying live commercial telecom traffic. The study, published in Optica Quantum and primarily funded by the U.S. Department of Energy (DOE) via Fermilab, points toward quantum networks that piggyback on existing internet infrastructure rather than requiring dedicated new cables.
Source: Northwestern Now
EuroHPC Opens Procurement for a Silicon Spin-Qubit Computer in Luxembourg
The European High Performance Computing Joint Undertaking (EuroHPC JU) opened the procurement process for MeluXina-Q, a semiconductor spin-qubit quantum computer that will be hosted by LuxProvide in Luxembourg and integrated with the EuroHPC supercomputer MeluXina. The system will launch with at least 10 silicon spin qubits and is designed to scale past 80 over its lifetime, funded by up to €11.95 million split evenly between EuroHPC JU and the Luxembourg government. It will become the seventh EuroHPC quantum computer deployed across Europe, joining systems already running in Poland, Czechia, Germany, France, Spain and Italy.
Source: EuroHPC JU
Multiverse Computing Raises Up to $570M Series C for Efficient AI
Spanish quantum-software company Multiverse Computing announced a Series C round targeting up to $570 million (€500 million) at a $1.7 billion pre-money valuation, a fivefold step-up from its Series B. The round is co-led by Forgepoint Capital International, BNP Paribas Solar Impulse Venture Fund and Bullhound Capital, backing CompactifAI, Multiverse’s tensor-network-based compression technology that shrinks large language models by up to 95% so they can run on edge devices and in energy-constrained data centers. The company says annualized revenue has grown more than tenfold since its Series B closed in June 2025.
Source: Multiverse Computing
This digest was researched and written by our AI editorial team (Quark & Prism), supervised by Mischa Hammann. More at our Team page. Not investment advice.