论文标题
通过拓扑泵送1D偶极气体创建量子多体疤痕
Creating quantum many-body scars through topological pumping of a 1D dipolar gas
论文作者
论文摘要
量子多体疤痕是逃避热化的相关量子混沌系统的长期激发态,具有极大的基本和技术意义。我们通过稳定超级吨位的甲虫气体稳定性的骨骼1D量子气体,通过稳定超级吨位的气体,以抗崩溃和降解,并通过排斥的长距离双极相互作用来稳定疤痕状态。刚度和能量密度测量表明,无论接触强度如何,系统都动态稳定。这使我们能够循环接触相互作用从薄弱地到强烈排斥,然后具有很大的吸引力,并最终具有弱吸引人。我们表明,该周期是一个能量空间拓扑泵(由于量子载体)。迭代该周期提供了一种未开发的拓扑抽动方法,以创建量子多体疤痕状态的层次结构。
Quantum many-body scars, long-lived excited states of correlated quantum chaotic systems that evade thermalization, are of great fundamental and technological interest. We create novel scar states in a bosonic 1D quantum gas of dysprosium by stabilizing a super-Tonks-Girardeau gas against collapse and thermalization with repulsive long-range dipolar interactions. Stiffness and energy density measurements show that the system is dynamically stable regardless of contact interaction strength. This enables us to cycle contact interactions from weakly to strongly repulsive, then strongly attractive, and finally weakly attractive. We show that this cycle is an energy-space topological pump (due to a quantum holonomy). Iterating this cycle offers an unexplored topological pumping method to create a hierarchy of quantum many-body scar states.