By Mackenzie Tatananni
From Washington to London, the world's major economic powers are deploying capital to ensure the quantum computing industry expands within their own borders. The race is only heating up.
Quantum was thrust into the spotlight last month after the U.S. Commerce Department committed $2 billion to fortify the domestic supply chain. The plan involves ownership stakes in pure-play companies like Rigetti Computing and D-Wave Quantum, mirroring the government's earlier intervention in critical minerals and semiconductors.
But while the U.S. is buying directly into the supply side, the U.K. is trying to solve the other side of the ledger: stoking commercial demand. Speaking at London Tech Week on Tuesday, U.K. Science Minister Patrick Vallance unveiled the "Quantum Growth Alliance," a coalition of early adopters in sectors from banking to defense to telecoms. HSBC, BAE Systems, and Vodafone are among the inaugural members.
"We don't yet have scale quantum computers, but we will have, and we need to make sure that we create that demand signal so that people know what the potential customer base is here," Vallance said. "The integration of quantum computing and existing compute services will be central."
The goal here is simple: Bridge the gap between quantum developers and industrial heavyweights before larger quantum systems arrive, bringing with it the computational power to leave classical systems in the dust.
While quantum technology has seen some commercial adoption, most demonstrations are confined to the lab. The final hurdle before scaling up is error correction. As a general rule, the individual components of quantum machines become increasingly unruly as they grow larger, causing error rates to spike.
Industry experts generally expect fault-tolerant systems to emerge by the end of the decade. Like today's classical machines, these computers will be able to maintain normal operations even in the presence of errors.
Crucially, timelines are converging on 2029. By then, IBM expects to launch its first fault-tolerant supercomputer, while researchers at Alphabet's Google project some systems will be powerful enough to crack modern encryption.
"If you look at what we've done over the past 14 or so years there, there's been a big investment in R&D," Vallance said Tuesday. That heavy, coordinated investment has moved the sector past basic science and into practical engineering.
"That, in turn, has started to lead to companies forming, and we're now at the stage where we need to think about scaling those companies and getting them to stay in the U.K.," Vallance added.
Tuesday's announcement accelerates the U.K.'s quantum push, following its $2.5 billion pledge earlier this year to scale the technology by the end of the decade. As part of that deal, the British government committed to deepening ties with companies that already boast a presence in the country.
Key players include IonQ, which struck a strategic research partnership with Cambridge University, and recently-public Infleqtion, which delivered a 100-qubit computer to the U.K.'s National Quantum Computing Centre in March.
London's commitment includes a previous GBP1.2 billion ($1.4 billion) allocation to procure large-scale quantum computers -- a move Vallance said would "build an early market." He separately teased an upcoming announcement about a funding pool "based on hybrid quantum and quantum computing algorithms."
The U.K. isn't alone in treating quantum readiness as a policy matter. In an industry report Thursday, Rosenblatt analyst John McPeake pointed out that other governments are making large-scale moves of their own.
Ireland committed EUR460 million ($532 million) just this week to build seven new research centers supporting industries including quantum computing. Operating under a national network called Rinn, the initiative officially launches on July 1 and is slated to run for the next eight years. Rinn's quantum research center secured roughly 9% of that funding, an investment the government says is "focused on establishing Ireland as a global leader in quantum science."
Ireland may not have the global name recognition of China or the U.S. -- two rivals locked into a fierce battle for market dominance -- but quantum companies themselves are increasingly eyeing the country as a strategic launchpad. Software developer Horizon Quantum announced Thursday that it had selected Dublin for its second quantum testbed, featuring a sixth-generation IonQ machine.
Outside Europe, other nations are making headway. The United Arab Emirates recently launched a sovereign quantum hardware program through Abu Dhabi's Technology Innovation Institute. The UAE plans to build its first domestic quantum computer in partnership with Qilimanjaro Quantum Tech, a Barcelona-based deep-tech startup.
What's clear is that quantum computing has officially graduated from a curiosity to a cornerstone of national strategy, from the U.S. to the Middle East. In a market where competing nations are moving at breakneck speed, the U.K. knows its success won't be measured by the power of its computers, but by its ability to scale the businesses that build them.
Write to Mackenzie Tatananni at mackenzie.tatananni@barrons.com
This content was created by Barron's, which is operated by Dow Jones & Co. Barron's is published independently from Dow Jones Newswires and The Wall Street Journal.
(END) Dow Jones Newswires
June 12, 2026 12:06 ET (16:06 GMT)
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