An atom interferometer can make ultraprecise measurements of gravity
RAL Space/IQO Hannover
Very cold atoms have been used to measure gravity more precisely than we thought, breaking the limit of quantum weirdness.
This record measurement was made using ultracold atoms, some of the most sensitive force sensors. They are useful for such work, at the coldest possible temperature – Absolute zero – they take on quantum properties that are highly susceptible to pushes and pulls in their environment. But this sensitivity can be confounded by tiny fluctuations in the states of atoms, or “quantum noise.”
