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研究生: 郭孟奇
Guo, Meng-Chi
論文名稱: 單光子的量子儲存
Quantum Storage of Single Photons
指導教授: 陳泳帆
Chen, Yong-Fan
學位類別: 碩士
Master
系所名稱: 理學院 - 物理學系
Department of Physics
論文出版年: 2012
畢業學年度: 100
語文別: 中文
論文頁數: 48
中文關鍵詞: 單光子量子儲存
外文關鍵詞: Single Photon, Quantum Storage
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  • 本論文在冷銣原子系統中,實現基於電磁波引發透明的單光子儲存。我們建立一暗區自發力光井,可捕捉約2 × 108 顆冷銣原子,其光學密度可達20。在光儲存實驗中,我們將探測光與耦合光的夾角縮小至0.3度,並且將原子居量準備於單一賽曼態(Zeeman State)中,可使此量子記憶體的儲存時間達0.14 ms。

    We demonstrated electromagnetically-induced-transparency-based light storage at the single-photon level using cold 87Rb atoms. Around 2 × 108 cold atoms with an optical depth of 20 were trapped in a dark spontaneous-force optical trap. The storage time was improved to 0.14 ms by reducing the angle between probe laser and coupling laser to 0.3 degree and preparing the atoms into a single Zeeman state .

    第一章 緒論 1 1.1雷射冷卻........................................................ 1 1.2 電磁波引發透明.................................................. 1 1.3 慢光與光儲存.................................................... 5 第二章 實驗系統 9 2.1 冷原子系統 ..................................................... 9 2.1.1磁光陷阱 ...................................................... 9 2.1.2 暗區自發力光井 .............................................. 12 2.2 雷射系統....................................................... 14 2.2.1 探測雷射..................................................... 14 2.2.2 耦合雷射..................................................... 14 2.2.3 幫浦雷射..................................................... 14 2.3 光偵測系統..................................................... 16 第三章 電磁波引發透明實驗 17 3.1 EIT光譜....................................................... 18 3.2 慢光與光儲存................................................... 20 第四章 單光子的量子儲存 33 4.1 實驗準備....................................................... 33 4.2 單光子的量子儲存............................................... 36 第五章 結論與展望 42 參考文獻 43 附錄A 光子偵測器 45 附錄B EIT光譜技術 47

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