這篇論文中，我們探討雙量子點系統在聲子共振腔的非馬可夫程度。我們發現由電聲交互作用所產生的相消干效應在這個系統裡扮演重要的角色。此效應使得在量子對中的資訊在環境中流散。藉著改變量子點之間的距離以及共振腔的厚度，我們可以改變系統的非馬可夫性質，我們也發現相消干係數與系統的非馬可夫程度有強烈的關係。

In this thesis, we investigate non-Markovianity of a double-dot qubit in a suspended phonon cavity. Pure dephasing due to the electron-phonon interaction plays an important role in the system. It leads information lose from qubit to the environment. By changing distance between dots and thickness of slab, the non-Markovianity varies. We also find the non-Markovianity can be strongly related to the dephasing factor.

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