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| DC 欄位 | 值 | 語言 |
|---|---|---|
| dc.contributor.advisor | 薛文証(Wen-Jeng Hsueh) | |
| dc.contributor.author | Li-Yang Chen | en |
| dc.contributor.author | 陳立揚 | zh_TW |
| dc.date.accessioned | 2021-07-10T22:11:00Z | - |
| dc.date.available | 2021-07-10T22:11:00Z | - |
| dc.date.copyright | 2018-08-02 | |
| dc.date.issued | 2018 | |
| dc.date.submitted | 2018-07-27 | |
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| dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/77601 | - |
| dc.description.abstract | 本論文主旨是在探討介觀環在自旋軌道交互作用影響下對於自旋傳輸的影響，當電子自旋入射進兩端導線連接的介觀環時，在環中可以透過調整自旋軌道作用的強度來改變電子得到的AC相位進而影響其自旋傳輸結果，因此可以藉由改變參數來對入射電子的自旋產生不同方向的翻轉，也就是量子閘的作用。在本文中將會推導出介觀環之散射矩陣，透過分析介觀環之反射率挑選適當的參數便可以得到無損耗的量子閘。 | zh_TW |
| dc.description.abstract | The spin transport of mesoscopic rings with spin orbit interation under electric fields are studied. When an electron goes through a mesoscopic ring connected with two external leads, AC phase gained by the electron can be changed by varying the strength of spin orbit interaction via an external electric field, hence the influence on spin-dependent electron transport. For this reason, the incoming spin can be rotated to different position on Bloch sphere by varing the parameters in this system, which corresponds to the function of a quantum gate. After deriving the scattering matrix of a mesocopic ring, the reflection coefficient of the ring can be obtained. A lossless quantum gate can be built by choosing appropriate parameters. It is shown that all the important single qubit quantum gates which are loseless can be built by coupling loseless rings together. | en |
| dc.description.provenance | Made available in DSpace on 2021-07-10T22:11:00Z (GMT). No. of bitstreams: 1 ntu-107-R05525086-1.pdf: 5975991 bytes, checksum: 97b6130cbad7608b84fd38df295f644c (MD5) Previous issue date: 2018 | en |
| dc.description.tableofcontents | 摘要 i
Abstract ii 目錄 iii 圖目錄 iv 符號表 vi 第一章 導論 1 1.1 背景與研究動機 1 1.2 歷史文獻回顧 3 1.3 論文架構 6 第二章 介觀環的量子波導 7 2.1 無外加電場雙端介觀環模型 7 2.2 介觀環與自旋軌道交互作用 12 第三章 AC環自旋耦合散射矩陣之推導 20 3.1 兩端AC環結構與邊界條件 20 3.2 兩端AC環散射矩陣之推導 24 第四章 AC環之自旋傳輸特性分析與應用 29 4.1 兩端AC環導線夾角為π之情況分析 29 4.2 兩端AC環導線夾角為任意角之情況分析 38 第五章 結論與未來展望 53 5.1 結論 53 5.2 未來展望 54 參考文獻 55 | |
| dc.language.iso | zh-TW | |
| dc.subject | 自旋電子學 | zh_TW |
| dc.subject | 介觀環 | zh_TW |
| dc.subject | 量子閘 | zh_TW |
| dc.subject | 自旋軌道交互作用 | zh_TW |
| dc.subject | 量子干涉 | zh_TW |
| dc.subject | spintronics | en |
| dc.subject | mesocospic ring | en |
| dc.subject | quantum gate | en |
| dc.subject | spin orbit interaction | en |
| dc.subject | quantum interference | en |
| dc.title | 具自旋軌道交互作用雙端量子環之自旋傳輸特性 | zh_TW |
| dc.title | Spin Transport in Two-Terminal Quantum Ring with Spin-Orbit Interaction | en |
| dc.type | Thesis | |
| dc.date.schoolyear | 106-2 | |
| dc.description.degree | 碩士 | |
| dc.contributor.oralexamcommittee | 鄭勝文(Sheng-Wun Jheng),黃智賢(Jhih-Sian Huang),邱仁政(Ren-Zheng Qiu) | |
| dc.subject.keyword | 介觀環,量子閘,自旋軌道交互作用,量子干涉,自旋電子學, | zh_TW |
| dc.subject.keyword | mesocospic ring,quantum gate,spin orbit interaction,quantum interference,spintronics, | en |
| dc.relation.page | 58 | |
| dc.identifier.doi | 10.6342/NTU201802099 | |
| dc.rights.note | 未授權 | |
| dc.date.accepted | 2018-07-30 | |
| dc.contributor.author-college | 工學院 | zh_TW |
| dc.contributor.author-dept | 工程科學及海洋工程學研究所 | zh_TW |
| 顯示於系所單位： | 工程科學及海洋工程學系 | |
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