Salmanpour M Asadolah, Mosleh M, Hamidi S M
Laser and Plasma Research Institute, Shahid Beheshti University, Tehran, Iran.
Sci Rep. 2025 Jul 1;15(1):21264. doi: 10.1038/s41598-025-06303-3.
This study presents a dual-frequency modulation scheme in which both optical and microwave fields are simultaneously modulated in a microwave-optical double resonance system within a hot rubidium vapor cell. The combined modulation produces harmonic spectral features at the sum and difference of the individual modulation frequencies, indicating nonlinear coupling between the fields. Experimental results reveal that this approach enables modulation of atomic population dynamics and facilitates efficient population transfer between hyperfine levels. The observed frequency mixing highlights the system's sensitivity to dual modulation and suggests its potential for enhancing the spectral control of atomic transitions. These findings may support future developments in atomic clocks, high-precision magnetometers, and quantum information processing systems.
本研究提出了一种双频调制方案，其中在热铷气室中的微波 - 光双共振系统中同时对光场和微波场进行调制。这种组合调制在各个调制频率的和与差处产生谐波光谱特征，表明场之间存在非线性耦合。实验结果表明，这种方法能够调制原子布居动力学，并促进超精细能级之间的高效布居转移。观察到的频率混合突出了该系统对双调制的敏感性，并表明其在增强原子跃迁光谱控制方面的潜力。这些发现可能为原子钟、高精度磁力计和量子信息处理系统的未来发展提供支持。
