Quantinuum Brand Guidelines: Honeywell Meets Cambridge Quantum, Trapped Ions & a 2026 IPO

Honeywell hardware and Cambridge software.

Quantinuum was created by joining two businesses founded in 2014. Honeywell Quantum Solutions was the quantum hardware unit of the American industrial group Honeywell, building computers that hold their qubits in trapped ions; Cambridge Quantum Computing, founded by Ilyas Khan through the University of Cambridge’s Accelerate Cambridge programme, worked on quantum software and cybersecurity, according to English Wikipedia. Wikipedia adds that Honeywell had chosen trapped ions because it believed the technology could serve its own businesses, from aerospace to building technology.

Honeywell announced in June 2021 that it would separate its quantum unit and combine it with Cambridge Quantum. The deal was completed at the end of that year: on 1 December 2021 UKTN reported that the merger was done and that the new company, Quantinuum, had launched, with Honeywell shareholders owning 54% and Cambridge Quantum shareholders 46%. UKTN also reported that Honeywell would be both a customer of Quantinuum and its supplier of ion traps, and that the company already had offices in the UK, the US, Japan and Germany.

Khan became chief executive at the start, and Tony Uttley, who had led Honeywell Quantum Solutions, served as president and chief operating officer until 2023. That year Rajeeb “Raj” Hazra, formerly a corporate vice president at Intel, took over as chief executive, and Khan became chief product officer and vice chair, Wikipedia says; the company’s website lists Hazra as president and chief executive today.

Ions on a chip, and the software around them.

Quantinuum builds trapped-ion quantum computers, in which individual charged atoms held in place on a chip serve as qubits. Wikipedia says it chose a quantum charge-coupled device architecture, which lets every qubit interact with every other. Its first generation, the System Model H1, ran on 12 qubits when it launched in 2020, and the System Model H2 followed in May 2023; the company now describes H1 as having a linear layout and H2 a “racetrack.” Wikipedia records that Microsoft and Quantinuum together created four logical qubits on the H2.

The third generation, Helios, was unveiled on 5 November 2025. MIT Technology Review reported that day that it computes with 98 barium ions at a time, where H2 used 56 ytterbium ions, that its core is a thumbnail-size chip inside a chamber cooled to about 15 kelvin on an optical table, and that it sits at the company’s facility in Colorado, with users logging in over the cloud. The same article noted that, like other existing quantum computers, Helios cannot yet run the commercially valuable algorithms the field hopes for.

The Cambridge side of the company shows in its software. Its products include TKET, an open-source compiler and toolkit for gate-based machines; InQuanto, a platform for computational chemistry; Quantum Origin, which the company describes as a quantum random number generator for strengthening encryption keys; and lambeq, an open-source library for quantum natural language processing. Its developer platform is called Nexus, and its programming toolkit Guppy.

Wikipedia lists some early users. Deutsche Bahn began working with Quantinuum in 2021 on rescheduling rail traffic; Nippon Steel used its algorithms the same year to simulate iron crystals; PureVPN partnered with it in April 2022 to make its OpenVPN protocol quantum-resistant; and in 2024 Mitsui and Eaglys agreed to build Quantum Origin into a data-analytics platform. With Honeywell, the company has also begun putting keys generated by Quantum Origin into smart utility meters.

Design and documentation.

Quantum computing companies sell machines that few customers will ever see, so their pictures carry much of the explaining. The most familiar image is the dilution refrigerator: a tiered, gold-coloured structure of plates and cables that looks a little like a chandelier when its outer casings are removed. Rigetti’s website, for one, walks visitors through such a refrigerator, naming the gold-plated copper plates that separate its temperature stages.

Each hardware approach has its own pictures. Companies that trap ions or neutral atoms tend to show vacuum chambers, laser tables and optical benches, often lit so that the beams and windows glow; makers of superconducting and silicon devices show chip close-ups and wafers, frequently under blue or violet light. Photonic companies show the optical chips and fibres that carry their qubits. Alongside the hardware come people: physicists and engineers at racks of control electronics, oscilloscopes and laptops.

Because qubits themselves cannot be photographed in any ordinary sense, the sector also leans on abstraction. Renderings of glowing spheres, lattices, interference patterns and waves stand in for superposition and entanglement, and dark backgrounds with points of coloured light are common across websites, investor presentations and conference stands.

Those conferences are part of the visual record too. IEEE Quantum Week, whose 2026 edition its organisers set in Toronto, gathers researchers and engineers around technical papers and workshops, while Q2B, which lists 2026 meetings in Tokyo, Copenhagen and Chicago, presents itself as a place to connect quantum technology with business. This guide sets out what can be checked about each company — who founded it, who owns it and where its machines are built — and marks clearly what rests only on the company’s own word.

Broomfield, Cambridge and a June 2026 listing.

The company has two main bases. UKTN reported in 2021 that its European headquarters was in Cambridge, UK and its North American headquarters in Colorado; English Wikipedia places the latter in Broomfield, Colorado, and lists offices in Brooklyn Park, Minnesota, Washington, London, Oxford and Tokyo. Wikipedia adds that Quantinuum set up a research and operations centre in Singapore in March 2026. The Helios machine described by MIT Technology Review is housed at its Colorado facility.

Quantinuum stayed private for its first years, raising money from investors, with Honeywell holding a majority from the start; in November 2025 MIT Technology Review described Honeywell as its majority owner. It then went public on its own rather than through a SPAC. Its shares began trading on Nasdaq under the symbol QNT on 4 June 2026, after an initial public offering, The Quantum Insider reported that day; according to the company’s IPO filing, as quoted by the same report, Honeywell would keep about 48.1% of the combined voting power after the offering.

That leaves Quantinuum as a listed company in which Honeywell keeps a large share of the votes, and with its history still tied to both parents. Its machines carry the H-Series and Helios names, and its software keeps the separate product names it brought from Cambridge.

For a design guide, Quantinuum shows how a merger of a hardware unit and a software company can be presented under one new name while each side’s products keep their own. Compare Honeywell, which formed it with Cambridge Quantum, and IonQ, another trapped-ion company. For this guide we use indigo, lilac and grey with a serif, an unofficial interpretation; no product or logo is reproduced.

Keep Quantinuum’s identity on hand — save it to a board in the Made Good inspiration library.