利用V型原子与单模光场的非共振相互作用制备四光子相干态

提出了一种利用简并V型三能级原子与振幅很大的单模相干光场的远离共振相互作用,制备四光子相干态的有效新方案.同时证明了在相同的条件下,按照相同的方法不能制备出四成分以上的相干态的叠加态, 即当在腔中注入的第三个原子的速度与第二个原子的速度相等时,腔场将保持这种四光子相干态不变.

Generation of Four-photon Coherent States via Non-resonant Interaction of a Degenerate V-type Atom with Single-mode Cavity Field

A new scheme of generating the four-photon coherent states is presented through interaction of a degenerate V-type three-level atom with single-mode coherent state cavity field of large amplitude under far-off resonant condition. It is impossible to generate the coherent states with more than four-component by the same method mentioned above. That is, the four-photon coherent states remain unchanged in the cavity when the third atom with the same velocity as the second atom is injected into the cavity.