摘要
Cooling and trapping of atoms and molecules is a prerequisite to studies of a multitude of quantum phenomena at ultracold temperatures.Early approaches to laser cooling rely on using monochromatic field in the scattering process of light by atoms into unoccupied modes of vacuum field with the rate of spontaneous emission as a time limiting factor.More recent cooling methods are based on stimulated process with polychromatic light and utilize adiabatic passage offering advantages of more frequent momentum exchanges with light and stronger cooling forces.
