标题： 前期弗洛凯态促进周期驱动多体系统的谐波响应 显示英文标题

标题： Pre-Floquet states facilitating coherent subharmonic response of periodically driven many-body systems

摘要： 我们展示了受外部时间周期性驱动的多玻色子系统的相干次谐波运动。 这种潜在机制通过数值分析周期驱动的玻色-哈伯德二聚体得到了具体说明，并通过系统平均场描述相关的不变管的半经典再量子化从概念上得到了阐明。 有人认为，即使高阶次谐波响应也可以通过弱相互作用的弗洛凯凝聚体系统地设计出来，并通过包含足够多粒子的实验观察到。 显示英文摘要

摘要： We demonstrate coherent subharmonic motion of a many-Boson system subjected to an external time-periodic driving force. The underlying mechanism is exemplified numerically through analysis of a periodically driven Bose-Hubbard dimer, and clarified conceptually by semiclassical re-quantization of invariant tubes pertaining to the system's mean-field description. It is argued that even high-order subharmonic response can be systematically engineered, and be observed experimentally, with weakly interacting Floquet condensates comprising a sufficiently large number of particles.