在此論文中我們探討在量子輸運及量子干涉系統中的電子同調性。我們特別關注雙量子點Aharonov-Bohm干涉儀在這方面的物理特性。這個簡單的系統提供了一個整合的平台，讓我們可以在一個統一的框架下探索在許多量子輸運系統中都普遍出現的各式議題，包括量子同調性，量子耗散和干涉。藉由對於該系統的精確主方程求解，我們研究了雙量子電所有電子組態的動態變化；我們也調查了該干涉儀的暫態輸運行為。除此之外，我們也更進一步將自旋以及自旋軌道角動量耦合考慮進同樣的體系，並且研究了該系統自旋相關的動態輸運特性。綜合上述研究結果，我們將對量子輸運與干涉元件中的電子同調性提出我們的觀點。

In this thesis, we investigate electron coherence in quantum transport and interference devices. In particular, we specifically focus on the physical properties of a double-quantum-dot Aharonov-Bohm interferometer. This simple system is an ideal platform for exploring the issues of quantum coherence, dissipation and interference that prevail in many quantum transport systems in a unified framework. By solving an exact master equation, we study explicitly the dynamics of the full electronic configurations of the double-quantum-dot system. We also investigate the transient transport dynamics of such interferometer. We further make an extension to include spin-orbit interaction in the same setup and examine the time-dependent spin-resolved transport dynamics. By comprehending the properties of various physical quantities, we provide a perspective on electron coherence in quantum transport and interference devices.

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