在周期性驱动的玻色-爱因斯坦凝聚体中观测到的高阶量子共振。
High-order quantum resonances observed in a periodically kicked Bose-Einstein condensate.
作者信息
Ryu C, Andersen M F, Vaziri A, d'Arcy M B, Grossman J M, Helmerson K, Phillips W D
机构信息
Atomic Physics Division, National Institute of Science and Technology, Gaithersburg, Maryland 20899-8424, USA.
出版信息
Phys Rev Lett. 2006 Apr 28;96(16):160403. doi: 10.1103/PhysRevLett.96.160403. Epub 2006 Apr 27.
We have observed high-order quantum resonances in a realization of the quantum delta-kicked rotor, using Bose-condensed Na atoms subjected to a pulsed standing wave of laser light. These resonances occur for pulse intervals that are rational fractions of the Talbot time, and are characterized by ballistic momentum transfer to the atoms. The condensate's narrow momentum distribution not only permits the observation of the quantum resonances at 3/4 and 1/3 of the Talbot time, but also allows us to study scaling laws for the resonance width in quasimomentum and pulse interval.
我们利用处于激光脉冲驻波中的玻色凝聚钠原子，在量子δ-踢转子的实验实现中观测到了高阶量子共振。这些共振出现在脉冲间隔为塔尔博特时间的有理分数时，其特征是原子的弹道动量转移。凝聚体狭窄的动量分布不仅使得在塔尔博特时间的3/4和1/3处能够观测到量子共振，还让我们得以研究准动量和脉冲间隔中共振宽度的标度律。
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