At the core of these systems, a mechanical oscillator (such as a vibrating membrane or a cantilever) interacts with an optical cavity. When light enters the cavity, it exerts radiation pressure on the mechanical oscillator, causing it to move. Conversely, the motion of the oscillator can alter the properties of the light inside the cavity. This bidirectional interaction forms the basis of quantum optomechanics, enabling the study and manipulation of quantum states of light and mechanical motion.
