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If you slow atoms to a stop you can use them for self referencing navigation. In an aircraft for example, any change in direction will cause the atoms to move, which can be detected and used to determine the change in the planes course. This is an alternative to using GPS. And extremely useful for submarines, since submerged vessels cannot use GPS (the signals don't penitrate water)
A more precise inertial navigation?
Exactly!
I couldn't think of the right term for it, thank you.
Yeah it sounds just like existing IME dead reckoning navigation, but with different sensor types
A specific vibration or position of the atoms, containing the information of changes in movement...
That's high-tech indeed, but still sounds like classical physics to me, even with the ultra-cold temperatures involved, no Uncertainty Principle at play.
Oh, believe you me, it's quantum: https://www.imperial.ac.uk/news/245114/quantum-sensor-future-navigation-system-tested/