arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0908.2549physics.atom-ph
收藏

在费什巴赫共振存在下强耦合光缔合中功率展宽的抑制

Suppression of power-broadening in strong-coupling photoassociation in the presence of a Feshbach resonance

Bimalendu Deb, Arpita Rakshit

摘要:

分析了磁费什巴赫共振存在下的光缔合(PA)谱。非微扰解的问题产生的PA线宽和位移的解析表达式,适用于任何PA激光强度和磁场调谐的费什巴赫共振。我们表明,通过调谐磁场接近Fano最小值,它是可能的,以抑制功率展宽在增加的激光强度。这是由于未扰动和扰动连续谱的PA跃迁的量子干涉造成的。高激光强度下的谱线变窄伴随着大的光谱位移。我们简要地讨论了冷碰撞谱线窄化的重要后果。

英文摘要:

Photoassociation (PA) spectrum in the presence of a magnetic Feshbach resonance is analyzed. Nonperturbative solution of the problem yields analytical expressions for PA linewidth and shift which are applicable for arbitrary PA laser intensity and magnetic field tuning of Feshbach Resonance. We show that by tuning magnetic field close to Fano minimum, it is possible to suppress power broadening at increased laser intensities. This occurs due to quantum interference of PA transitions from unperturbed and perturbed continuum. Line narrowing at high laser intensities is accompanied by large spectral shifts. We briefly discuss important consequences of line narrowing in cold collisions.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑