标题： 快速相干分裂的玻色-爱因斯坦凝聚体 显示英文标题

标题： Fast Coherent Splitting of Bose-Einstein Condensates

摘要： 制备非平凡的量子态而不引入不需要的激发或退相干，仍然是在利用超冷原子系统进行量子模拟中的一个核心挑战。 我们采用最优控制方法实现一维玻色-爱因斯坦凝聚体的快速、相干分裂，在保持量子关联的同时实现最小的经典激发。 此外，我们探索了两步协议，在其中首先诱导受控的经典运动，然后通过定制的控制序列随后抑制。 我们的实验突显了最优控制在多体量子系统中的量子态工程和动态控制方面的潜力。 显示英文摘要

摘要： Preparation of non-trivial quantum states without introducing unwanted excitations or decoherence remains a central challenge in utilizing ultracold atomic systems for quantum simulation. We employ optimal control methods to realize fast, coherent splitting of a one-dimensional Bose-Einstein condensate, achieving minimal classical excitations while preserving quantum correlations. Furthermore, we explore two-step protocols in which controlled classical motion is first induced and subsequently suppressed via tailored control sequences. Our experiments highlight the potential of optimal control for quantum state engineering and dynamical control in many-body quantum systems.