 Resolved sideband cooling

Resolved sideband cooling is a technique used primarily in the context of quantum physics and atom optics to cool an oscillator, such as a trapped ion or an atom in an optical lattice, down to its quantum ground state. This method exploits the interaction between the oscillatory motion of the particle and a laser field to reduce the energy of the particle's motion. The concept arises from the observation that an oscillator can absorb or emit energy in discrete packets (quanta) when interacting with light.