In this paper, several four-quantum-dot topological structures are designed. The influence of the interdot coupling strength and intradot Coulomb interactions on the conductance is discussed. The location of the anti-resonance band can be manipulated by tuning the interdot coupling strength, which suggests a physical scheme of an effective quantum switch. The Fano anti-resonance peak may evolve into a resonance peak. For the particular value of the interdot coupling strength, two Fano anti-resonances collapse and bound states in the continuum are formed. Moreover, many-body effect makes the number of anti-resonance bands increase. This study provides a theoretical basis for the design of quantum computing devices.

中文翻译：

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通过几个四量子点拓扑结构的传输

本文设计了几种四量子点拓扑结构。讨论了点间耦合强度和点内库仑相互作用对电导的影响。可以通过调整点间耦合强度来控制反共振带的位置，这表明了有效量子开关的物理方案。Fano反共振峰可能演变成共振峰。对于点间耦合强度的特定值，两个Fano反共振坍缩并形成连续体中的束缚态。此外，多体效应使反共振带的数量增加。该研究为量子计算器件的设计提供了理论依据。