标题： 通过干涉探测里德伯态原子之间的相互作用 显示英文标题

标题： Probing the interaction between Rydberg-dressed atoms through interference

摘要： 我们研究了原子玻色-爱因斯坦凝聚体在光学晶格中的动力学，其中每个原子的电子基态通过远失谐激光与一个高度激发的里德伯态弱耦合。这种修饰在基态原子之间诱导出可切换的有效软核相互作用，在晶格中会产生位点内以及长程相互作用项。当开启修饰激光时，玻色-爱因斯坦凝聚体会经历一种非平凡的坍缩和复兴动力学，这可以在原子从光学晶格释放后产生的干涉图案中观察到。此干涉信号强烈依赖于修饰激光脉冲的强度和持续时间，并可用于探测和表征里德伯修饰原子之间的有效相互作用。 显示英文摘要

摘要： We study the dynamics of an atomic Bose-Einstein condensate in an optical lattice in which the electronic groundstate of each atom is weakly coupled to a highly excited Rydberg state by a far off-resonant laser. This dressing induces a switchable effective soft-core interaction between groundstate atoms which, in the lattice, gives rise to on-site as well as long-range interaction terms. Upon switching on the dressing laser the Bose-Einstein condensate undergoes a nontrivial collapse and revival dynamics which can be observed in the interference pattern that is created after a release of the atoms from the optical lattice. This interference signal strongly depends on the strength and the duration of the dressing laser pulse and can be used to probe and characterize the effective interaction between Rydberg-dressed atoms.