碱原子玻色-爱因斯坦凝聚体中观测超慢微波的理论背景
Theoretical background for observing ultra-slow microwaves in a Bose-Einstein condensate of alkali atoms
摘要：
我们提出了一种新的微观方法，可以研究微波在碱金属原子的玻色-爱因斯坦凝聚体中的传播特性。假设信号的频率被调谐到这些原子的超精细基态能级之间的跃迁。发现了脉冲慢化条件与系统参数的关系，表明慢化后的信号在该系统中能以很小的能量损失传播。在超精细能级塞曼分裂的情况下也研究了这种现象。本文讨论了在铯原子凝聚气体中观测超慢微波的可能性。
英文摘要：
We represent a new microscopic approach that allows studying the propagation properties of microwaves in a Bose-Einstein condensate of alkali atoms. It is assumed that the frequency of signal is tuned up to the transition between hyperfine ground state levels of such atoms. Pulse slowing conditions dependence on the system parameters is found. It is shown that the slowed signal can propagate in mentioned system with rather small energy loss. Such phenomenon is also studied in case of hyperfine levels Zeeman splitting. A possibility of ultra-slow microwaves observing in a condensed gas of cesium atoms is discussed.
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