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<p>We investigate quantum transmission through two quantum wires connected by triple quantum dots with nonreciprocal interdot couplings. We find that although unidirectional and bidirectional nonreciprocal couplings can produce the same eigenlevels of the quantum dots, they lead to different transmission function spectra in the quantum wires, especially when multiple pathways enhance quantum interference effects. This is characterized by distinct Fano lineshapes in the transmission function spectra as nonreciprocal coupling strength increases. We believe this work provides insights into how nonreciprocal coupling mechanisms control quantum transmission through quantum wires.</p>

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Control of quantum transmission through two quantum wires connected by nonreciprocally coupled quantum dots

  • 期刊论文

  • 发表日期：

    2025年12月12日

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  • Tong-Yang Zhou

摘要

We investigate quantum transmission through two quantum wires connected by triple quantum dots with nonreciprocal interdot couplings. We find that although unidirectional and bidirectional nonreciprocal couplings can produce the same eigenlevels of the quantum dots, they lead to different transmission function spectra in the quantum wires, especially when multiple pathways enhance quantum interference effects. This is characterized by distinct Fano lineshapes in the transmission function spectra as nonreciprocal coupling strength increases. We believe this work provides insights into how nonreciprocal coupling mechanisms control quantum transmission through quantum wires.