论文标题
观察单个捕获量子量子的量子同步
Observing Quantum Synchronization of a Single Trapped-Ion Qubit
论文作者
论文摘要
同步几个量子系统对于理解深量子制度中的同步至关重要。在过去的几年中，是否可以同步两级系统，最小的量子系统。在这里，我们第一次证明了量子位确实可以通过使用捕获的离子系统同步到外部驾驶信号。通过工程完全可控的增益和阻尼过程，离子量子置位可以同步以与驱动信号相同的频率振荡并在相位锁定。我们系统地研究同步的参数区域，并观察到阿诺德舌的特征。我们的测量值与基于量子量同步的最新理论的数值模拟非常吻合。通过同步量子信息的基本单元，我们的研究开辟了将量子同步应用于大规模量子网络的可能性。
Synchronizing a few-level quantum system is of fundamental importance to understanding synchronization in deep quantum regime. Whether a two-level system, the smallest quantum system, can be synchronized has been theoretically debated for the past several years. Here, for the first time, we demonstrate that a qubit can indeed be synchronized to an external driving signal by using a trapped-ion system. By engineering fully controllable gain and damping processes, an ion qubit is synchronized to oscillate at the same frequency as the driving signal and lock in phase. We systematically investigate the parameter regions of synchronization and observe characteristic features of the Arnold tongue. Our measurements agree remarkably well with numerical simulations based on recent theory on qubit synchronization. By synchronizing the basic unit of quantum information, our research opens up the possibility of applying quantum synchronization to large-scale quantum networks.
