We examine the traversal aspect of ultracold two-level atoms through a high-quality two-photon mazer with squeezed vacuum and coherent field distributions. Here the net cavity potential is constituted by the coherent addition of multiple barriers and well potentials, which is quite different from the potential offered by a cavity in the Fock or vacuum state. For squeezed vacuum and coherent field distributions, one gets different phase times ($ {t_{ph}} $) for different modes of the distribution, which are then averaged by taking the weighted mean on the $ {t_{ph}} $ over the n-dependent transmission probability. It is found that the nature, intensity of the field, and injected coherence of the incident atoms have a decisive role in controlling peak values and sub- and superclassical traversals of the tunneling atoms. For two of the system’s dressed states ($ | {{\Phi _{b0}}}\rangle $, $ | {{\Phi _{b1}}}\rangle $), the cavity offers reflectionless transmission, as the atoms experience zero potential due to the dark state formation. Moreover, for a somewhat intense cavity field, mazer action (scattering-type behavior) may be obtained for an extended range of energies due to increased cavity potential in the course of atom–cavity interaction.

中文翻译：

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在压缩的真空和相干场分布中，通过双光子激光在超冷原子的隧穿中注入相干性

我们通过具有压缩真空和相干场分布的高质量双光子激光仪，研究了超冷两能级原子的遍历情况。此处，净腔电势由多个势垒和阱电势的相加所构成，这与福克或真空状态下腔体提供的电势完全不同。对于压缩真空和相干场分布，对于不同的分布模式，人们会获得不同的相位时间（$ {t_ {ph}} $），然后通过对$ {t_ {ph}} $取加权平均值进行平均超过n依赖的传输概率。发现场的性质，场强和入射原子的注入相干在控制峰值和隧穿原子的亚超和超经典遍历方面起决定性作用。对于系统的两个穿衣状态（$ | {{\\ Phi _ {b0}}} \ rangle $，$ | {{\\ Phi _ {b1}}} \ rangle $），空腔作为原子提供无反射传输。由于形成了暗态，所以电势为零。此外，由于在原子-空穴相互作用的过程中空穴势的增加，对于扩展的能量范围，对于稍微强的空穴场，可以获得马泽尔作用（散射型行为）。