约束阱中受激发原子的集体反弹效应所导致的自组织行为

Self-organization of light driven atoms induced by recoil effect in a harmonic trap

研究N个中性二能级原子在谐振约束阱中与光场作用时的集体动力学行为.原子在简谐约束阱中受到强光场的抽运后,由于原子与光场相互作用的反弹效应而激发简谐振动模,从而量化地改变原子与光场作用的共振匹配条件,在一定系统参数条件下将导致弱探测光场强度的显著放大,并伴随着原子在相空间内自发地产生集体自组织的团簇结构.

In this paper, the collective dynamic behaviors of N two-level atoms pumped by two-mode light field in a harmonic trap are investigated. When atoms are driven by the intense pump field, the atomic oscillating modes in the trap are continually excited by the photon recoil effect, which discretely changes the atomic detuning from the pumping field. Under proper resonant conditions the weak probe field will be greatly amplified and the atomic spatial structures will be spontaneously formed in the phase space.