An anonymous reader quotes a report from the Royal Navy:

> The Royal Navy has [1]successfully demonstrated the capabilities of ground-breaking cold atom technology . P2000 vessel HMS Pursuer hosted the trial, which unlocks new possibilities in areas such as covert monitoring, which require precise signals for accurate positioning, navigation and timing. The Office of the Chief of Technology Officer (OCTO) for the RN worked with UK quantum technology company Aquark Technologies. The trial involved the company's miniature cold atom systems, founded on Aquark's unique laser-cooling method, known as supemolasses.

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> This method to generate cold atoms does not need an applied magnetic field, therefore reducing the size, weight, power consumption and cost of sensors. A cold atom is an atom that has been laser-cooled to extremely low temperatures, typically near absolute zero (-273.15C). At these temperatures, the thermal motion of atoms is very slow, allowing their quantum mechanical properties to be precisely controlled. Quantum Sensing is an advanced sensor technology that detects changes in motion, and electric and magnetic fields, by collecting data at the atomic level.

Commander Matthew Steele, who heads up Future Technology for OCTO, said: "Quantum technologies being developed in the UK will offer an alternative Position, Navigation and Timing (PNT) capability necessary to operate effectively in GPS denied or degraded environments."

"Over the next three years, the Navy seeks to accelerate the development of quantum technologies -- such as Aquarks -- through funding and sea trials, to secure the Royal Navy an opportunity to invest in a non-GPS-based PNT capability and to maintain its global operating advantage."



[1] https://www.royalnavy.mod.uk/news/2024/october/31/20241101-royal-navy-successfully-tests-quantum-sensing-technology