论文标题
在三角光学晶格中与S-和D波段的原子Ramsey干涉法
Atomic Ramsey interferometry with S- and D-band in a triangular optical lattice
论文作者
论文摘要
拉姆西干涉仪在科学和工程中具有广泛的应用。与基于内部状态的传统干涉仪相比，具有外部量子状态的干涉仪在某些应用中具有量子模拟和精度测量的优势。在这里，我们首次在三角形光晶格的S-和D波段中与Bloch状态开发了一个拉姆西干涉法。在二维耦合晶格中实现此干涉仪的关键是，我们使用快捷方式方法来构建$π/2 $脉冲。我们观察到清晰的拉姆齐条纹，并分析条纹的破坏机理。此外，我们设计了S-和D波段之间的回声$π$脉冲，这大大改善了连贯时间。在尺寸耦合晶格中，这种拉姆西干涉仪在拓扑物理学，沮丧的效果和运动量子操作的量子模拟中具有潜在的应用。
Ramsey interferometers have wide applications in science and engineering. Compared with the traditional interferometer based on internal states, the interferometer with external quantum states has advantages in some applications for quantum simulation and precision measurement. Here, we develop a Ramsey interferometry with Bloch states in S- and D-band of a triangular optical lattice for the first time. The key to realizing this interferometer in two-dimensionally coupled lattice is that we use the shortcut method to construct $π/2$ pulse. We observe clear Ramsey fringes and analyze the decoherence mechanism of fringes. Further, we design an echo $π$ pulse between S- and D-band, which significantly improves the coherence time. This Ramsey interferometer in the dimensionally coupled lattice has potential applications in the quantum simulations of topological physics, frustrated effects, and motional qubits manipulation.
