A bet on quantum

Journal name:
Nature Physics
Volume:
11,
Page:
89
Year published:
DOI:
doi:10.1038/nphys3261
Published online

The UK is investing ambitiously in quantum technologies.

In December 2013, the Chancellor of the Exchequer, George Osborne, announced that the UK would fund a £270 million initiative to establish a National Quantum Technologies Programme to convert quantum physics research into commercial products1. Following almost a year of consultations, proposals and evaluations, the government has now revealed how the biggest chunk of this investment (roughly £120 million) will be allocated across a national network of Quantum Technology Hubs that will be led by the universities of Birmingham, Glasgow, Oxford and York, but will also involve another 13 universities and 132 companies.

The four hubs were selected from a shortlist of eight proposals, and will each focus on different applications spanning quantum sensing and metrology, quantum communications, and quantum computing and simulation. Moreover, an additional £4 million has been set aside to establish a Quantum Metrology Institute at the National Physical Laboratory (NPL), the UK's measurement standards laboratory.

The UK has a strong base in fundamental quantum research, so the rationale to develop its applications and encourage their exploitation in industry is sound. However, an inability to follow up and successfully exploit its research for commercialization is arguably a weakness that has historically plagued Britain. Why should it be any different this time?

“There is an emphasis on playing to existing strengths and working towards technologies that can realistically be delivered on the timescale of years.”

Although it is inevitable that any flagship investment focusing on a particular area of research will lead to some disappointment from scientists working on 'excluded' areas, there are grounds to be optimistic. For one thing, there is an emphasis on playing to existing strengths and working towards technologies that can realistically be delivered on the timescale of years. Quantum metrology is one such example: atomic clocks have been established for decades, but there are plans for the NPL to use them as a means to provide a centralized time with which to synchronize high-frequency financial transactions in the City of London. In effect, the NPL would be providing accurate time, which would help to prevent traders from exploiting tiny time differences between the networks of different banks for profit.

The deployment of so-called second generation quantum technologies, namely those harnessing effects such as quantum superposition and entanglement2, is a little further off. One area that has received much coverage and attention due to its immense potential is that of quantum information processing3. Alas, solid-state quantum systems — widely believed to be the most likely means for realizing quantum computers — are notably absent from the main missions of the four quantum hubs. This decision is most likely down to cold, hard pragmatism: other areas such as quantum communications, which includes quantum cryptography, appear to be more mature, although they still face formidable challenges if they are to become widespread technologies.

On the face of it, the National Quantum Technologies Programme strikes a reasonable balance between scientific ambition and likely technological payoff. Moreover, the quantum hubs themselves are conceived to operate as part of a network that is designed to be inclusive of the wider research and industry community — they are not designed to operate in isolation. Research has a knack for generating the unexpected, and this structure should provide an ability to respond to changes in the research landscape efficiently.

Perhaps most importantly, by integrating themselves within the British university system, the hubs will play a central role in creating a generation of world-class researchers. The seeds of a new school of thought are being sown, they must now be nurtured.

References

  1. Nature Phys. 10, 1 (2014); http://doi.org/zkb
  2. Georgescu, I. & Nori, F. Phys. World 25(5), 1617 (2012).
  3. Gibney, E. Nature 516, 2426 (2014).

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