将初始处于W态的3个二能级原子中的两个原子分别注入处于真空态的两个腔中,并与光场发生共振相互作用。采用数值计算方法,比较了进行原子态选择性测量和原子旋转操作时的腔内原子偶极压缩效应。讨论了对腔外原子的旋转操作和测量对腔内原子偶极压缩效应性质的影响。研究结果表明:通过对腔外原子的旋转操作和原子态的选择性测量,可控制腔内原子偶极压缩效应;在第一象限内随旋转角的增大,腔内原子的偶极振幅Sx分量经历从不压缩→出现压缩→压缩增强→压缩减弱的过程。这表明可通过操控旋转角来控制腔内原子的偶极压缩效应强弱。

Two of three two-level atoms which are initially in the W state are injected into two empty cavities respectively to have resonant interaction with the light field.The dipole squeezing of the two atoms inside cavities under a rotation operation and direct selective maeasurement are compared numerically.The influences of the manipulation and state-selective measurement of the atom outside the cavities on the dipole squeezing of the atoms inside cavities are discussed.The results show,the dipole squeezing of atoms inside the cavities can be controlled by the manipulation of the atoms outside the cavities; when the rotation angle increases from zero to π/2,the term of amplitude Sx displays a changing process from squeeze strengthening to weakening.It indicates that the dipole squeezing of the atoms inside the cavities can be controlled by the manipulation of the rotation angle of the atom outside.