Title: Constructive Quantum Interference in a Photo-Chemical Reaction of $^{87}$Rb Bose Einstein Condensate Show Chinese title

Title: 光化学反应中$^{87}$铷玻色爱因斯坦凝聚体的构造性量子干涉

Abstract: Interferences emerge when multiple pathways coexist together leading towards the same result. A Recent study by Blasing and coworkers [PRL 121(7):073202] showed that in a photo-association reaction of Raman dressed spin orbit coupled $^{87}$Rb Bose Einstein Condensate when the reactant spin state is prepared in a coherent superposition of multiple bare spin states it leads to a destructive interference between reaction pathways. Here we report a theoretical study for a reaction scheme which leads to constructive quantum interference. This is achieved by changing the reactive scattering channel in the reaction. As the origin of coherent control comes from the spin part of the wavefunction it is sufficient to use radio frequency coupling to achieve the superposition state. Our results show that interferences can be used as a resource for the coherent control of photo-chemical reactions. The approach is general and can be employed to study a wide spectra of chemical reactions in the ultracold regime. Show Chinese abstract

Abstract: 当存在多个通路共同导致相同结果时，就会出现干扰。 一项由Blasing及其同事进行的最新研究[PRL 121(7):073202]表明，在Raman编织自旋轨道耦合的$^{87}$Rb玻色-爱因斯坦凝聚体的光缔合反应中，当反应物自旋态被制备为多个裸自旋态的相干叠加时，会导致反应路径之间的破坏性干涉。 在此，我们报告了一项关于导致建设性量子干涉的反应方案的理论研究。 这是通过改变反应中的反应散射通道来实现的。 由于相干控制的来源来自波函数的自旋部分，因此仅使用射频耦合就足以实现叠加态。 我们的结果表明，干扰可以作为相干控制光化学反应的资源。 该方法具有普遍性，可以用于研究超冷 regime 中广泛范围的化学反应。