We study the stimulated Raman adiabatic passage for a pair of interacting cold atoms driven into the Y-type configuration with two adjacent Rydberg states. The results show that the self and cross dipole-dipole interactions will cause the blockade effect of states |rr〉 (|ll〉) and |rl〉 (|lr〉), respectively. However, it is viable to overcome the blockade effect and achieve efficient population transfer to different Rydberg states |r〉 and |l〉 by choosing appropriate single-photon and two-photon detunings to fully compensate dipole-induced shifts. Moreover, a maximal entangled state composed of two Rydberg states will generate with the proper detunings of coherent fields.

中文翻译：

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被驱动成 Y 配置的相互作用冷原子的受激拉曼绝热通道与两个相邻的里德堡态

我们研究了一对相互作用的冷原子的受激拉曼绝热通道，它们被驱动到具有两个相邻里德堡状态的 Y 型配置中。结果表明，自和交叉偶极-偶极相互作用将分别引起状态|rr> (|ll>) 和|rl> (|lr>) 的阻塞效应。然而，通过选择适当的单光子和双光子失谐来完全补偿偶极子引起的位移，克服阻塞效应并实现向不同里德堡状态 |r> 和 |l> 的有效种群转移是可行的。此外，由两个里德堡态组成的最大纠缠态将在相干场的适当失谐下产生。