CAJ | 학술논문

在全量子理论的背景下提出两个二能级原子分别与一单模腔场相互作用的系统模型,利用量子主方程和数值模拟计算等方法,研究该体系中腔场平均光子数、Mandel’s Q因子及二阶量子相关度在非稳态时的变化规律。此外,对体系中原子及腔场中光谱结构进行了分析。结果表明：减小腔场耗散系数,增大原子间耦合系数,体系量子特性愈加明显。体系光谱呈现出Mollow 三重峰结构,且原子辐射谱强度远大于腔场辐射谱强度。当原子跃迁频率与腔场跃迁频率为近共振时,Mollow峰值为三峰中最大值。此外,增大原子与腔场间耦合系数,可增大原子光谱的中峰强度；而增大腔场光谱的中峰强度,则需减小原子与腔场间耦合系数。
재전양자이론적배경하제출량개이능급원자분별여일단모강장상호작용적계통모형,이용양자주방정화수치모의계산등방법,연구해체계중강장평균광자수、Mandel’s Q인자급이계양자상관도재비은태시적변화규률。차외,대체계중원자급강장중광보결구진행료분석。결과표명：감소강장모산계수,증대원자간우합계수,체계양자특성유가명현。체계광보정현출Mollow 삼중봉결구,차원자복사보강도원대우강장복사보강도。당원자약천빈솔여강장약천빈솔위근공진시,Mollow봉치위삼봉중최대치。차외,증대원자여강장간우합계수,가증대원자광보적중봉강도；이증대강장광보적중봉강도,칙수감소원자여강장간우합계수。
Based on the all-quantum theory, the system which includes two double-level atoms inter-acting with two single-mode cavity fields separately was studied. With making the Markoff and the rotating-wave approximations, using quantum master equation and the numerical simulation, we in-vestigated the influence of the cavity dissipation coefficient and the cavity-cavity coupling coefficient on the mean photon number distribution under the unsteady situation. In the meantime, we dis-cussed how the Mandel’s Q parameter and the second-order coherence were changing, and then ana-lyzed the quantum effects of the system. Besides that, we analyzed the spectra of the atoms and the cavities. The results show that the system quantum properties become more obvious by reducing the cavity dissipation coefficient and increasing the coupling coefficient between cavities. The system spectra present Mollow three peak structure, and the atomic emission spectrum intensity is greater than the cavity field spectrum intensity. When the atomic transition frequency and the cavity transi-tion frequency is near resonance, the Mollow peak is the highest of the three peaks. In addition, the spectrum intensity of the atomic middle peak increases with the increasing of the atom-cavity cou-pling coefficient, and the spectrum intensity of the cavity middle peak is quite opposite.