"The magnetic field is actually a superposition of fields from many current sources," geophysicist Terry Sabaka from NASA's Goddard Space Flight Centre in Greenbelt, Maryland explained in 2020.

USTC researchers created a long-lived Schrödinger-cat state, boosting quantum metrology and precision measurements. Their ...

By harnessing quantum effects such as superposition, entanglement ... are atomic-scale defects in diamond that can be used as highly sensitive probes for magnetic fields, electric fields, temperature, ...