When we want to measure change, we need to detect motion of that change. For wee little changes....or for real fast changes, we need something that moves very easily and very quickly. That means something that has little inertia and little mass....so a weakness can move it, and when it moves, it can move as fast as the stimulus of measurement.
One atom, cooled down to take the jitter out of it.....can do this. And do it very well. The problem is that one atom is to small for us to handle and measure correctly. So, they are trying to find compatible atoms, that when cooled down, the atoms will form into a formation......that responds like one atom would. Once that group of atoms is formed.......now we can measure, just as if it was one atom.....a big atom.
An atom amplifier. For small, quick measurements. And not only that. The condensate, should automatically respond to any stimulus. Any acceleration, even it's orientation. And any EM radiation. With a direction for it.
With these kind of sensors, many hope to provide some answers. But like all else, it will just present more questions. It always happens that way.
I love the idea and look forward to the day when they stamp these sensors out. Like IC chips.