论文标题
从耗散原子腔系统中的连续到离散的时间晶体
From a continuous to a discrete time crystal in a dissipative atom-cavity system
论文作者
论文摘要
我们提出在驱动的耗散系统中非平衡顺序的动态稳定，其中包括原子玻色的凝结物在高技巧光腔内的原子 - 内生，并用在异常分散剂中运行的光学常驻波泵送。当泵场的幅度接近未调制系统的特征极限周期频率的两倍时，就会发现稳定的亚谐波响应。动力学相图表明，这种亚谐波响应发生在扩展的区域，相对于未调制系统发生稳定的极限周期动力学。在打开调制时，我们将原子腔系统从连续到离散的时间晶体调整。
We propose the dynamical stabilization of a nonequilibrium order in a driven dissipative system comprised an atomic Bose-Einstein condensate inside a high finesse optical cavity, pumped with an optical standing wave operating in the regime of anomalous dispersion. When the amplitude of the pump field is modulated close to twice the characteristic limit-cycle frequency of the unmodulated system, a stable subharmonic response is found. The dynamical phase diagram shows that this subharmonic response occurs in a region expanded with respect to that where stable limit-cycle dynamics occurs for the unmodulated system. In turning on the modulation we tune the atom-cavity system from a continuous to a discrete time crystal.
