Saab UK, Aquark Technologies, and the Royal Navy's Defence Contract and Technology Organisation completed a field trial in June 2026 across multiple UK sites, integrating cold-atom quantum clocks with operational military radar. The companies describe it as the first integration of quantum timing hardware into a live radar network maintaining a coherent tracking picture without GPS or GNSS signals, including under simulated jamming and spoofing.
The problem this solves
Modern cooperative radar works by combining tracks from multiple separated radar units into a single picture, and doing that correctly requires the units to agree on time to within a fraction of a nanosecond. GPS and other GNSS systems normally provide that shared timing reference. In a contested environment, an adversary jams or spoofs that signal, and once the timing reference degrades, the combined picture degrades with it: tracks drift apart, and separated sensors no longer reliably describe the same target. A timing source that doesn't depend on satellites at all removes that single point of failure.
What was tested
Aquark Technologies provided two AQlock 2.0 prototype cold-atom clocks, built on what the company calls Super-Molasses Trap technology, a magnetic-field-free approach to cooling and trapping atoms for precision timekeeping. Saab UK supplied Giraffe 1X 3D radar systems, integrated with the AQlock units. The Royal Navy's experimentation vessel XV Patrick Blackett took part as a network relay node, with QinetiQ and the Defence Science and Technology Laboratory supporting. This was the third collaboration between the Royal Navy and Aquark, not a first-time pairing.
Multiple Giraffe 1X radars combined live target tracking into one operational picture using only the quantum clocks as their timing reference, with no GNSS input. The trial also introduced deliberate timing distortions to simulate jamming, and reported predictable degradation in tracking accuracy followed by rapid recovery once clock synchronization was restored. Both AQlock units reached usable timing precision in under 30 minutes from a cold start, a real operational constraint for equipment that needs to work in the field rather than stay running continuously in a lab.
What the announcement doesn't give you
The companies report sub-nanosecond synchronization across separated sensor nodes without a precise figure attached, and describe the jamming test as producing "predictable degradation" without publishing the actual accuracy numbers before and after. Cold-atom clocks are a real, well-established technology for precision timing, this isn't a speculative claim, but a trial report without the underlying accuracy and drift numbers is a demonstration that the integration works, not yet a fully specified performance result. There's also no stated timeline for equipping any radar unit beyond this trial, or a cost figure for the AQlock hardware itself.
Why this is a genuinely different application
Most quantum hardware coverage on this site concerns computation: qubits, gates, and circuits. Quantum clocks are a separate application of the same underlying physics, using the extremely stable, well-defined energy transitions of cooled atoms as a timing reference rather than as a computational resource. That makes this trial a useful reminder that "quantum technology" covers more than quantum computers. Precision timing and sensing are commercially closer to deployment in some respects, since a clock doesn't need millions of coherent qubits to be useful, it needs to keep better time than the alternative, and cold-atom clocks already do.
What to watch next
Whether Aquark or the Royal Navy publish the underlying synchronization accuracy and drift numbers from this trial, and whether AQlock hardware moves from a prototype pairing to an equipped radar unit beyond the trial vessel. A field trial demonstrating the concept works is a real step. A fielded, GNSS-independent radar network is a different, later one.