Three-level atom interferometer with bichromatic laser fields
Three-level atom interferometer with bichromatic laser fields
复制标题
双色激光场三能级原子干涉仪
DOI：
10.1103/physreva.68.043621
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发表时间：
2003
影响因子：
2.9
通讯作者：
A. Morinaga
中科院分区：
文献类型：
--
作者：
K. Honda;S. Yanagimachi;A. Morinaga
为了研究两激发态之间的相位信息，我们研制了一种利用三能级原子与双色场耦合的三能级原子干涉仪。首先，我们提出了基于单跃迁算子的三能级原子与双色场相互作用的理论描述。利用波函数的时间演化，推导并计算了几种具有双色场的三能级原子干涉仪干涉条纹和可见度的方程。对最佳激励条件进行了评价。其次，实验证明了几种类型的三能级原子干涉仪，使用热钙原子束，在长寿命激发态中具有m=1和m=-1两个塞曼基态，并在基态和激发态之间耦合双色共振场。并与计算结果进行了干涉条纹行为的比较。当各频率分量的激发功率相同时，由空间分离的两束双色激光激发的三能级原子干涉仪产生的可见性最大。
We have developed a three-level atom interferometer using three-level atoms coupled with bichromatic fields in order to investigate the phase information between two excited states. First, we presented a theoretical description of the interaction of three-level atoms with bichromatic fields based on single-transition operators. Using the time evolution of a wave function, the equations of the interference fringes and the visibility were derived and calculated for several types of the three-level atom interferometers with bichromatic fields. Optimum excitation conditions were evaluated. Next, several types of three-level atom interferometers were demonstrated experimentally using a thermal calcium atomic beam with two Zeeman substates of m=1 and m=-1 in the long-lived excited state coupled with bichromatic resonant fields between the ground state and the excited states. The behaviors of the interference fringes were compared among them along with the calculated results. The three-level atom interferometer excited by two bichromatic laser beams separated in space was found to produce the largest visibility among them when the excitation power of each frequency component was the same.