The transport properties of nanostructured systems are deeply affected by the geometry of the effective connections to metallic leads. In this work we derive a conductance expression for a class of interacting systems whose connectivity geometries do not meet the Meir-Wingreen proportional coupling condition. As an interesting application, we consider a quantum dot connected coherently to tunable electronic cavity modes. The structure is shown to exhibit a well-defined Kondo effect over a wide range of coupling strengths between the two subsystems. In agreement with recent experimental results, the calculated conductance curves exhibit strong modulations and asymmetric behavior as different cavity modes are swept through the Fermi level. These conductance modulations occur, however, while maintaining robust Kondo singlet correlations of the dot with the electronic reservoir, a direct consequence of the lopsided nature of the device.

中文翻译：

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比例耦合以外的电导和近藤干扰

纳米结构系统的传输特性会受到与金属引线有效连接的几何形状的深刻影响。在这项工作中，我们推导了一类相互作用系统的电导表达式，这些系统的连通性几何不满足Meir-Wingreen比例耦合条件。作为一个有趣的应用，我们考虑了一个量子点，该量子点连贯地连接到可调电子腔模上。该结构在两个子系统之间的广泛耦合强度范围内显示出清晰的近藤效应。与最近的实验结果一致，当不同的腔模扫过费米能级时，计算出的电导曲线表现出强调制和不对称行为。这些电导调制发生，但是，