UK Imposes Mysterious Ban On Quantum Computer Exports

Longtime Slashdot reader MattSparkes shares a report from NewScientist: Quantum computing experts are baffled by the UK government's new export restrictions on the exotic devices (source paywalled), saying they make little sense. [The UK government has set limits on the capabilities of quantum computers that can be exported -- starting with those above 34 qubits, and rising as long as error rates are also higher -- and has declined to explain these limits on the grounds of national security.] The legislation applies to both existing, small quantum computers that are of no practical use and larger computers that don't actually exist, so cannot be exported. Instead, there are fears the limits will restrict sales and add bureaucracy to a new and growing sector. For more context, here's an excerpt from an article published by The Telegraph in March: The technology has been added to a list of 'dual use' items that could have military uses maintained by the Export Control Joint Unit, which scrutinizes sales of sensitive goods. A national quantum computer strategy published last year described the technology as being 'critically important' for defense and national security and said the UK was in a 'global race' to develop it. The changes have been introduced as part of a broader update to export rules agreed by Western allies including the US and major European countries. Several nations with particular expertise on quantum computer technologies have added specific curbs, including France which introduced rules at the start of this month.

Last year, industry body Quantum UK said British companies were concerned about the prospect of further export controls, and that they could even put off US companies seeking to relocate to the UK. Quantum computer exports only previously required licenses in specific cases, such as when they were likely to lead to military use. Oxford Instruments, which makes cooling systems for quantum computers, said last year that sales in China had been hit by increasing curbs. James Lindop of law firm Eversheds Sutherland said: 'Semiconductor and quantum technologies -- two areas in which the UK already holds a world-leading position -- are increasingly perceived to be highly strategic and critical to UK national security. This will undoubtedly create an additional compliance burden for businesses active in the development and production of the targeted technologies.'

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