4 May 2025

Quantum Technologies in the UK

Rob Young

Quantum Technologies in the UK Risks and Opportunities for National Security

Quantum physics is the branch of science that describes the behaviour of the world of the small; it defines the properties of atoms, molecules, electrons and photons. Quantum science has been explored for decades, but practical applications have only emerged in recent years. Through its National Quantum Technologies Programme and other investments, the UK is one of the leading countries driving innovation in quantum computing, security and sensing. These technologies promise transformative impact across multiple sectors, from healthcare to finance, defence, energy and national security. 

As with all technologies, quantum devices pose threats to national security: quantum computers can be applied to attack encryption standards; quantum security could keep communications by nefarious groups secure; and quantum sensors may be used to track military operations that would otherwise be considered covert. 

Ensuring that the UK retains its competitive position in developing quantum technologies and establishing a robust supply chain demands significant investment in specialised resources and expertise, both technical and operational.

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