非线性相互作用诱导下光腔中超冷原子的新奇量子相变
发布时间：2018-08-07 14:43
【摘要】：Dicke模型是描述N个二能级原子与单模腔场集体耦合的系统。本文在标准Dicke模型的基础上引入原子-光非线性相互作用,使用自旋相干态变分方法从理论上给出基态能量泛函,并且在实验参数下通过可调的非线性原子-光相互作用给出了宏观多粒子量子态的丰富结构。本文主要呈现出蓝失谐和红失谐下原子数反转态、双稳的正常相、共存的正常-超辐射相等丰富的基态特性。
[Abstract]:The Dicke model is a system that describes the collective coupling of N two level atoms with a single mode cavity field. In this paper, the atom-optical nonlinear interaction is introduced on the basis of the standard Dicke model, and the ground state energy functional is given theoretically by using the spin coherent state variational method. The rich structure of the macroscopic multi-particle quantum states is obtained by the adjustable nonlinear atom-optical interaction under the experimental parameters. In this paper, the atomic number inversion states, the bistable normal phases, and the coexisting normal-superradiance properties of the ground state are mainly shown under blue detuning and red detuning.
【作者单位】： 山西大学理论物理研究所;
【基金】：国家自然科学基金(批准号:11404198;11275118;91430109;61505100) 山西省高等学校科技创新项目(批准号:2014102) 山西大学科研启动金(批准号:011151801004);山西大学本科生科研训练项目(批准号:2017015304) 国家基础科学人才培养基金(批准号:J1103210)
【分类号】：O469
[Abstract]:The Dicke model is a system that describes the collective coupling of N two level atoms with a single mode cavity field. In this paper, the atom-optical nonlinear interaction is introduced on the basis of the standard Dicke model, and the ground state energy functional is given theoretically by using the spin coherent state variational method. The rich structure of the macroscopic multi-particle quantum states is obtained by the adjustable nonlinear atom-optical interaction under the experimental parameters. In this paper, the atomic number inversion states, the bistable normal phases, and the coexisting normal-superradiance properties of the ground state are mainly shown under blue detuning and red detuning.
【作者单位】： 山西大学理论物理研究所;
【基金】：国家自然科学基金(批准号:11404198;11275118;91430109;61505100) 山西省高等学校科技创新项目(批准号:2014102) 山西大学科研启动金(批准号:011151801004);山西大学本科生科研训练项目(批准号:2017015304) 国家基础科学人才培养基金(批准号:J1103210)
【分类号】：O469
【相似文献】
相关期刊论文 前7条
1 董雷;兰朝凤;杨德森;时胜国;李思纯;;大振幅波非线性相互作用的谱分解法研究[J];哈尔滨工程大学学报;2010年04期
2 李锐锋;试析非线性相互作用在系统演化中的地位和作用[J];系统辩证学学报;1997年04期
3 任玉凤;协同学理论对非线性相互作用的方法论分析[J];内蒙古大学学报(人文社会科学版);1998年06期
4 肖齐;王s，
本文编号：2170355
本文链接：https://www.wllwen.com/kejilunwen/wulilw/2170355.html
