AI 中文总结
研究利用调制磁场控制原子激发能释放以产生延长或超辐射脉冲序列，通过模拟发现外差检测这些脉冲有尖锐光谱特征，可降低频率不确定性和波动。
AI 中文摘要
限制在光学腔中的原子系综的长寿命激发态产生的超辐射发射构成了一种实用的窄线宽光源。然而，在脉冲状态下，超辐射意味着快速发射和光谱展宽。最近的实验证明了不同锶原子跃迁的超辐射发射的相长和相消干涉。本文表明，通过用磁场调制原子跃迁频率，可以将原子激发能的释放控制为延长脉冲或超辐射脉冲序列。通过模拟表明，延长超辐射的外差检测显示出极其尖锐的光谱特征，这导致频率不确定性和波动显著降低。
英文摘要
Superradiant emission from long-lived excited states of an atomic ensemble confined in an optical cavity constitutes a practical source of light with narrow linewidth. In the pulsed regime, however, superradiance implies rapid emission and a broadening of the spectrum. Recent experiments have demonstrated constructive and destructive interference of superradiant emission by different strontium atomic transitions. In this article, we show that by modulating the atomic transition frequencies with a magnetic field, it is possible to control the release of the atomic excitation energy as a prolonged pulse or a train of superradiant pulses. By simulations, we show that heterodyne detection of the prolonged superradiance shows extremely sharp spectral features, which leads to significantly reduced frequency uncertainty and fluctuation.
Comments9 pages, 9 figures
