论文标题
在环腔中的自我捕获的原子物质波
Self-trapped atomic matter wave in a ring cavity
论文作者
论文摘要
我们研究了一个原子 - 玻色子冷凝物系统，该系统耦合到平均场理论中的环腔。由于原子与光场之间的相互作用，原子可以自被捕。通过变异和数值方法对此进行了验证。我们检查了这些自被捕状态的稳定性。对于弱泵的腔，它们在进化过程中散布。在强烈的抽水时，它们可以长时间保持形状。我们还研究了这些自被捕波的运动动力学，并发现它可以受到腔衰减速率的强烈影响。对于较小的空腔衰减速率，自被捕的波会经历阻尼的振荡。增加空腔衰减速率将导致自被捕波的减速。我们还将主要结果与半经典理论进行了比较，其中原子被视为经典颗粒。
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.
