论文标题
超低分子形成的激光控制：RBSR的情况
Laser control of ultracold molecule formation: The case of RbSr
论文作者
论文摘要
我们已经研究了用激光脉冲的超低RBSR分子的形成。在讨论了用脉冲控制莫特绝缘子阶段的优势之后，我们提出了两类策略。一流涉及两个电子状态。使用了两种用于多级过渡的刺激的拉曼绝热通道（搅拌）的扩展：交替的搅拌（A-stirap）和Straddle Stirap（s-stirap）。两种转移动力学都是建模和比较的。第二类策略仅涉及电子基态，并使用红外线（IR）/Terahertz（THZ）脉冲。该化学键首先是通过应用Thz chired脉冲或$π$ -Pulse创建的。随后，使用IR脉冲将分子转移到其RO振动基态。在最后一步中，已经研究了通过最佳控制技术的不同优化的脉冲序列。在当前激光技术的实验可行性标准中讨论了这些策略在效率和鲁棒性方面的相对优点。
We have studied the formation of ultracold RbSr molecules with laser pulses. After discussing the advantages of the Mott insulator phase for the control with pulses, we present two classes of strategies. The first class involves two electronic states. Two extensions of stimulated Raman adiabatic passage (STIRAP) for multi-level transitions are used : alternating STIRAP (A-STIRAP) and straddle STIRAP (S-STIRAP). Both transfer dynamics are modeled and compared. The second class of strategies involves only the electronic ground state and uses infrared (IR)/TeraHertz (THz) pulses. The chemical bond is first created by the application of a THz chirped pulse or $π$-pulse. Subsequently, the molecules are transferred to their ro-vibrational ground state using IR pulses. For this last step, different optimized pulse sequences through optimal control techniques, have been studied. The relative merits of these strategies in terms of efficiency and robustness are discussed within the experimental feasibility criteria of present laser technology.
