多年来，光的自发发射被认为是辐射原子的一种天然和不可改变的特性。但我们现在知道，通过改变原子所处环境的方法可以控制原子的自发发射：比如，可把金属反射镜放在原子附近，或把原子包封在金属腔内或光子晶体内。用这种方法就可操纵原子环境中的真空波动或零点电磁场。光 Over the years, the spontaneous emission of light is considered a natural and immutable property of the atom of radiation. However, we now know that the spontaneous emission of atoms can be controlled by changing the environment in which the atom is located: for example, a metal mirror can be placed near the atom or enclosed in a metal cavity or in a photonic crystal. In this way you can manipulate vacuum fluctuations in the atomic environment or zero electromagnetic field. Light