| 研究生: |
劉彥煌 Liu, Yen-Huang |
|---|---|
| 論文名稱: |
高精度量子穩定疊加態之準絕熱逆向調制 Robust Superposition of Quantum States with High-Fidelity by Quasiadiabatic Inverse Engineering |
| 指導教授: |
曾碩彥
Tseng, Shuo-Yen |
| 學位類別: |
碩士 Master |
| 系所名稱: |
理學院 - 光電科學與工程學系 Department of Photonics |
| 論文出版年: | 2017 |
| 畢業學年度: | 105 |
| 語文別: | 英文 |
| 論文頁數: | 37 |
| 中文關鍵詞: | 同調量子疊加態 、準絕熱 、絕熱捷徑 |
| 外文關鍵詞: | coherent superposition of quantum states, quasiadiabaticity, shortcuts to adiabaticity |
| 相關次數: | 點閱:112 下載:3 |
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本論文探討在二能階量子系統下,藉由準絕熱逆向調制的方法達到高精度且穩定的量子疊加態。在準絕熱條件(quasiadiabatic conditions)狀況下,量子態在量子系統傳遞時,對系統的參數有良好的穩定度;也就是說,量子態不容易被外在的其他因素所影響。逆向調制(invariant-based inverse engineering)則是一種能加快量子絕熱態在量子系統傳遞速度的方法;換句話說,量子系統維持在絕熱條件時,需要長久的時間傳遞到達特定的量子態,利用逆向調制能有效地縮短所需的時間,並準確地傳遞到特定的量子態。我們將準絕熱條件加入到逆向調制的方法中,形成出另一種絕熱捷徑的方法,不僅能縮短量子態傳遞到特定量子態的時間,也能在量子態傳遞時有良好的穩定度,我們稱之為準絕熱逆向調制(quasiadiabatic inverse engineering)。
In this thesis, we devote efforts to discussing effects of the quasiadiabatic conditions onto the adiabatic criterion in the two-level system, and create the quantum evolution that is robust against the systematic errors for designing a coherent superposition of quantum states. At the same time, through the invariant-based inverse engineering and the quasiadiabatic conditions, we can reduce required time of the evolution and obtain the desired states by setting the specific boundary conditions. Finally, we successfully produce a new kind of shortcuts to adiabaticity, quasiadiabatic inverse engineering.
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