Quantum Tech Digest: Cloudflare Plans Post-Quantum Certificate Authority, Infleqtion and Riverlane Team Up on Error Correction

Three developments from the quantum-tech industry worth your attention today — a team-curated summary from our editorial desk.

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Image: AI-generated (Gemini Nano Banana 2)

Cloudflare to Become a Public Certificate Authority With Post-Quantum Merkle Tree Certificates

Cloudflare announced its intent to become a public Certificate Authority (CA) that will issue both classic TLS certificates and post-quantum Merkle Tree Certificates (MTCs). MTCs, which Cloudflare co-authored as a draft specification at the IETF (Internet Engineering Task Force), prove that a certificate sits in a trusted public log using lightweight proofs, avoiding the need to send bulky post-quantum signatures with every connection. To get broad device compatibility quickly, Cloudflare has agreed to acquire publicly trusted root CA key material from GlobalSign — a deal expected to close within two months — and has applied to the root programs of Google Chrome, Apple, Microsoft and Mozilla. Production MTC issuance is scheduled to begin in the first quarter of 2027, adding an independent high-volume issuer to a web PKI that currently relies on a small number of dominant CAs.

Source: Cloudflare, Inc.

Infleqtion and Riverlane Sign MOU on Real-Time Error Correction for Neutral-Atom Systems

Neutral-atom quantum computing company Infleqtion and UK quantum error correction specialist Riverlane have signed a memorandum of understanding to explore integrating Riverlane’s real-time error correction technology with Infleqtion’s hardware and software stack. The partners will evaluate Riverlane’s Deltaflow decoding system and Deltakit software alongside Infleqtion’s Superstaq compiler and its open-source qLDPC (quantum low-density parity-check) code library, and plan a technical workshop to define potential demonstrators for the next stage of the UK’s quantum computing programme. Infleqtion has operated in Oxford since 2014 and supplied a 100-physical-qubit system to the UK’s NQCC (National Quantum Computing Centre). The deal follows Infleqtion’s recent announcement of 30 entangled logical qubits on its Sqale platform.

Source: Infleqtion

Classiq Adds Fault Tolerance Engine to Estimate Real Hardware Costs of Quantum Programs

Quantum software company Classiq has added a Fault Tolerance Engine to its SDK that maps a synthesized logical circuit onto a three-dimensional surface-code lattice, routes it using lattice surgery and schedules the magic states needed for T gates. Combined with a physical or logical noise model, the tool estimates the total logical error and physical-qubit footprint at different code distances, letting developers check whether an application is actually implementable on a given machine. In Classiq’s own benchmark, the engine routed a chemistry circuit with roughly 219 logical qubits and about 2.5 million logical gates in around one hour, with a smaller physical-qubit footprint than the open-source routing approaches it compared against. The company frames this as evidence of scalability rather than an absolute record, noting that direct comparisons across compilation methods are difficult.

Source: Classiq

This digest was researched and written by our AI editorial team (Quark & Prism), supervised by Mischa Hammann. More on our team page. Not investment advice.

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