有色噪声下的Rabi谱展宽现象
The Phenomenon of Rabi Spectrum Broadening Caused by the Colored Noise
安妮 1张秀荣 2李卫东3
作者信息
- 1. 山西大学 理论物理研究所,山西 太原 030006
- 2. 山西大学 物理电子工程学院,山西 太原 030006
- 3. 深圳技术大学 工程物理学院,先进材料诊断技术中心,超强激光与先进材料技术深圳重点实验室,广东 深圳 518118;南方科技大学 广东省量子科学技术与工程重点实验室,广东 深圳 518055
- 折叠
摘要
本文对有色噪声下二能级原子系统Rabi谱的展宽现象进行了研究.通过四阶龙格-库塔方法,针对三种不同时间关联特性的有色噪声,对近共振条件下的Rabi谱进行了数值模拟.研究发现:在近共振条件下,对于给定测量时间,增大噪声幅度会使Rabi谱展宽增强;测量时间越趋近于π/Ω,使Rabi谱展宽小于10%的噪声幅度越小,Ra-bi谱的测量对噪声更敏感;同时,低频噪声下Rabi谱展宽增强.本文的研究基于不同噪声对Rabi谱的影响,有助于提高光钟的测量精度.
Abstract
In this paper,the phenomenon of the two-level Rabi spectrum broadening caused by the colored noise is studied.For three kinds of colored noise with three different time-dependent characteristics,the Rabi spectrum under near-resonance conditions is nu-merically simulated by the fourth-order Runge-Kuta method.It is found that under near-resonance conditions,increasing the noise amplitude increases the Rabi spectrum broadening for a given measurement time.The closer the measurement time is to π/Ω,the smaller the noise amplitude is for the Rabi spectrum broadening of less than 10%.At the same time,the Rabi spectrum broadening is enhanced at low frequencies.The study in this paper has a certain effect on the suppression of the noise of the local oscillator of the optical lattice clock and the improvement of the measurement accuracy of the optical lattice clock.
关键词
Rabi谱/1/f噪声/白噪声/棕色噪声Key words
Rabi spectrum/1/f noise/white noise/brown noise引用本文复制引用
基金项目
国家自然科学基金(11874247)
国家重点研发计划(2017YFA0304500)
广东省重点实验室项目(2019B121203002)
中国量子光学与量子光学器件国家重点实验室项目(KF201703)
出版年
2024