利用选择共振作用制备纠缠态

Implementing Entangled State via Selective Resonant Interaction

文章提出一个在高品质腔中利用选择性相互作用制备Bell态和W态的方案。该方案通过参数的选择来严格控制囚禁原子和腔场之间的相互作用,在所需要的子空间里实现共振跃迁,而让原子的其它跃迁处于大失谐,从而可以绝热去除。因此,本方案可以有效抑制原子的自发辐射,而且不需要对腔中原子独立寻址,使其在实验上更容易实现。

A scheme is presented to generate Bell state and W state in a high-Q optical cavity with selective interaction. In the scheme, the parameters are selected to highly control the selective interaction between the atoms and the cavity field, yielding a resonant interaction inside one selected atom-field subspace and leaving the others in a highly dispersive regime, which can be eliminated adiabatically. So the scheme is insensitive to atomic spontaneous emission and will be realized easier due to commonly addressing the atoms inside the cavity.