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Chinese Physics Letters

Strong Correlation of Fluorescence Photons without Quantum Interference

胡响明, Fei Wang

Published Jan 1, 2007• 0 citations
OpenAlex

Abstract

一个驾驶三水平的 V 原子能面对量干扰射出 stronglycorrelated 荧光光子,这被预言了。这里,我们在从 driventhree 水平射出的荧光光子的紧张关联上检验 effectsof 量干扰一个原子。出人意料地,没有量干扰,强壮的关联发生。Thequantum 干扰趋于把关联功能归结为正常水平。在这二个盒子之间的 essentialdifference 被跟踪到量干扰 oncoherent 人口套住的不同效果(CPT ) 。为导致 CPT 的 V 原子,量干扰和协调 excitationcombine。为 A 原子然而,量干扰趋于破坏协调刺激导致的 CPT whilethe 效果。

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一个驾驶三水平的 V 原子能面对量干扰射出 stronglycorrelated 荧光光子,这被预言了。这里,我们在从 driventhree 水平射出的荧光光子的紧张关联上检验 effectsof 量干扰一个原子。出人意料地,没有量干扰,强壮的关联发生。Thequantum 干扰趋于把关联功能归结为正常水平。在这二个盒子之间的 essentialdifference 被跟踪到量干扰 oncoherent 人口套住的不同效果(CPT ) 。为导致 CPT 的 V 原子,量干扰和协调 excitationcombine。为 A 原子然而,量干扰趋于破坏协调刺激导致的 CPT whilethe 效果。
It has been predicted that a driven three-level V atom can emit strongly correlated fluorescence photons in the presence of quantum interference. Here we examine the effects of quantum interference on the intensity correlation of fluorescence photons emitted from a driven three-level Λ atom. Unexpectedly, strong correlation occurs without quantum interference. The quantum interference tends to reduce the correlation function to a normal level. The essential difference between these two cases is traced to the different effects of quantum interference on coherent population trapping (CPT). For the V atom, quantum interference and coherent excitation combine to lead to CPT. For the Λ atom, however, the quantum interference tends to spoil CPT while the coherent excitation induces the effect.
近年来,强场物理与量子光学两个领域交叉产生的物理效应正逐步成为研究热点。融合超快宽谱激发与共振调控,可在亚周期内制备电子-电子、电子-离子多体纠缠与相干,进而产生强场相干性诱导的空气激光、超连续辐射与自由感应衰变等新型相干辐射。本文围绕强场量子光学这一新兴交叉领域,聚焦强场下量子相干辐射及应用,综述其理论基础、物理机制及潜在应用等方面的现状和挑战。期望以此推动开放系统多体强场量子光学的理论与实验研究,以及对多自由度强场量子相干性建立、演化与弛豫规律的探索,拓展强场量子相干辐射与放大机制,为构建时-频-空稳定可控的新型辐射源、发展远程探测新技术、实现空气激光在痕量分子检测与燃烧诊断等方面的应用提供参考。