光子對與乙炔氣體的動態交互作用;Dynamic Interaction Behavior Between Photon Pairs AndAcetylene Gas

Please use this identifier to cite or link to this item: https://ir.lib.ncu.edu.tw/handle/987654321/99358

Title:	光子對與乙炔氣體的動態交互作用;Dynamic Interaction Behavior Between Photon Pairs AndAcetylene Gas
Authors:	潘冠廷;PAN, GUAN-TING
Contributors:	照明與顯示科技研究所
Keywords:	乙炔;光子分子交互作用;快光;負群延遲;反常色散;吸收線;Acetylene;Interaction;fast light;absorption lines;negative group delays;anomalous dispersion
Date:	2025-10-22
Issue Date:	2026-03-06 18:47:57 (UTC+8)
Publisher:	國立中央大學
Abstract:	我們研究了分子吸收與量子光傳播之間的交互作用，重點聚焦於單光子層級下的快光（fast-light）現象。從量子觀點出發，我們推導了吸收譜線的形成機制，並在符合因果律的條件下，模擬了由反常色散所引起的脈衝前移效應。在實驗方面，透過自發參數下轉換（SPDC）所產生的單光子脈衝，其頻譜被調整至與乙炔分子的吸收線對齊，成功觀察到不違反因果律的可測負群延遲（negative group delay）。作為前置步驟，我們亦分析了 SPDC 雙光子訊號的訊噪比（SNR），以確定最佳操作條件。此外，本研究也指出，快光效應可望藉由有效負折射率提升光學陀螺儀的靈敏度。;We investigate the interaction between molecular absorption and quantum light propagation, focusing on the fast-light phenomenon at the single-photon level. From a quantum perspective, we derived the formation mechanism of absorption lines and simulated pulse advancement induced by anomalous dispersion under causality. Experimentally, single-photon pulses generated via spontaneous parametric down conversion(SPDC) were spectrally aligned with an acetylene absorption line, enabling the observation of measurable negative group de lays without violating causality. As a preparatory step, the signal-to-noise ratio (SNR) of SPDC biphotons was analyzed to determine the optimal operating regime. The potential application of fast light in enhancing optical gyroscope sensitivity via an effective negative refractive index is also highlighted.
Appears in Collections:	[Institute of Lighting and Display Science ] Electronic Thesis & Dissertation

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