论文标题
一半刻板与整数效应在自旋系统的量子同步中
Half-integer vs. integer effects in quantum synchronization of spin systems
论文作者
论文摘要
我们研究由大于$ s = 1 $的自旋数的外部半经典信号驱动的单个自旋的量子同步，这是容纳量子自我维持的振荡器的最小系统。发现基于干扰的量子同步阻滞的发生在整数与半级旋转数$ s $的质量不同。我们将这种现象解释为系统中相干性产生的外部信号与极限周期结构之间的相互作用。此外，我们表明，相同的耗散限制稳定机制导致整数与半级$ s $的量子同步非常不同。但是，通过为每个自旋数选择一个适当的限制周期，可以为整数和半级旋转系统实现可比的量子同步水平。
We study the quantum synchronization of a single spin driven by an external semiclassical signal for spin numbers larger than $S = 1$, the smallest system to host a quantum self-sustained oscillator. The occurrence of interference-based quantum synchronization blockade is found to be qualitatively different for integer vs. half-integer spin number $S$. We explain this phenomenon as the interplay between the external signal and the structure of the limit cycle in the generation of coherence in the system. Moreover, we show that the same dissipative limit-cycle stabilization mechanism leads to very different levels of quantum synchronization for integer vs. half-integer $S$. However, by choosing an appropriate limit cycle for each spin number, comparable levels of quantum synchronization can be achieved for both integer and half-integer spin systems.
