腔增強自發參量下轉換產生之先驅單光子源

Heralded single photon source via cavity-enhanced spontaneous parametric down conversion

黃盈勳(Ying-Hsun Huang)

指導教授 ： 李瑞光

國立清華大學/電機資訊學院/光電工程研究所/碩士(2020年)

摘要

綜觀近5至10年的科技研革，從大數據[1]，緊接雲端資源[2]，所帶來的資訊安全議題，及這幾年的AI人工智慧[3]等等……，皆顯示傳統的測量及運算方式，已逐漸無法滿足人類的需求，近年來隨著google、IBM等科技巨頭陸續發表的量子產品，亦顯示「量子」科技的發展正如火如荼；然談到光的非古典量子態，最基本的莫過於數態和壓縮態，在現今各個量子應用上，單光子光源也都是項重大議題，故本研究欲利用腔增強自發參量下轉換，非線性晶體為週期性極化鈮酸鋰，及先驅機制來製備單光子光源，以探討其特性並期做更多應用。

關鍵字

量子 ； 單光子 ； 先驅 ； 共振腔 ； 自發參量下轉換 ； 鈮酸鋰

並列摘要

Looking at the scientific revolution of these 5 to 10 years. We can find the shortcomings and insufficient of traditional computing from the application of big data, cloud system, and AI (Artificial Intelligence) etc. And with the market share importance from the technology magnates such as google, IBM, also showing us the development of “quantum technology” is in full swing. However, touch upon the non-classical quantum states of light. Nothing is more important than number state and squeezed state. Nowadays in quantum applications, single photon light source is always a big issue. Therefore, this research proposes to produce a heralded single photon source by cavity-enhanced spontaneous parametric down conversion, which nonlinear crystal is PPLN (Periodically Poled LiNbO_3), for using in quantum states understanding and quantum application.

並列關鍵字

Quantum ； Single photon ； Heralded ； Cavity ； Spontaneous Parametric Down Conversion(SPDC) ； PPLN ； Lithium niobate

參考文獻

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