arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2012.04888cond-mat.quant-gas
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环形腔中的自陷原子物质波

Self-trapped atomic matter wave in a ring cavity

Jieli Qin, Lu Zhou

摘要:

在平均场论中,研究了原子玻色-爱因斯坦凝聚体与环形腔耦合的系统。由于原子与光场的相互作用,原子可以自陷。这是验证变分和数值方法。我们研究了这些自陷态的稳定性。对于弱泵浦腔,它们在演化过程中扩展;而在强泵浦下,它们可以长时间保持形状。我们还研究了这些自陷波的运动动力学,并发现它可以强烈地受腔衰减率的影响。对于小的腔衰减率,自陷波经历阻尼振荡。增加空腔衰减率将导致自陷波的减速。我们还将主要结果与把原子作为经典粒子处理的半经典理论作了比较。

英文摘要:

We studied a system of atomic Bose-Einstein condensate coupled to a ring cavity within the mean-field theory. Due to the interaction between atoms and light field, the atoms can be self-trapped. This is verified with both variational and numerical methods. We examined the stability of these self-trapped states. For a weakly pumped cavity, they spread during the evolution; while at strong pumping, they can maintain the shape for a long time. We also studied the moving dynamics of these self-trapped waves, and found out that it can be strongly affected by the cavity decay rate. For a small cavity decay rate, the self-trapped waves undergo a damped oscillation. Increasing the cavity decay rate will lead to a deceleration of the self-trapped waves. We also compared the main results with the semiclassical theory in which atoms are treated as classical particles.

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。

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