利用V型三能级原子与相干态光场Raman相互作用传送未知原子态

TELEPORTATION OF AN UNKNOWN ATOMIC STATE VIA THE RAMAN INTERACTION OF V-TYPE THREE-LEVEL-ATOM AND COHERENT CAVITY FIELD

描述了简并V型三能级原子与单模相干态光场的Raman相互作用 ,获得了处于激发态单态的原子与相干态光场相互作用的结果 利用探测原子与光场的相互作用将原子和光场制备成最大缠结态 ,并注入待测原子 ,通过原子与腔模构成的Bell基矢演化 ,对腔场进行选择性探测 ,获得探测原子相互作用后可能的量子状态 ,然后对待测原子与腔场进行联合探测 ,接着对探测原子的量子状态实施幺正变换 ,就将探测原子制备到待测原子的初始量子态上 。

The Raman interaction of degenerating V-type three-level atom and coherent cavity-field is described and the interaction formulae between atoms of excited states and coherent light cavity fields are obtained at first.The greatest entangled state is prepared by utlizing the interaction of measurement atom and coherent light cavity field,and the atom to be measured is injected into the cavity field.With the revolution of the Bell bases constructed by the atom and the cavity-mode,and selective measurement on the coherent cavity-field,the probable quantum states of measurement atom are obtained after the interaction.Then,by means of joint measurement on the atom to be measured and the coherent cavity-field,and an unitary transformation on the measurement quantum states,the measurement atom quantum states are prepared into as the same as the initial quantum state of the atom to be measured.It follows that the teleportation of an unknown V-type three-level atom is realized.