论文标题
单个自旋系统中的几何和动态相之间的相互作用
Interplay between geometric and dynamic phases in a single spin system
论文作者
论文摘要
我们使用微波场和自由进动的组合来驱动钻石中钻石中不同轨迹的氮呈（NV）中心的自旋，并研究了BLOCH球体上的不同轨迹，并研究了总相位框架依赖性分解成几何和动态部分的物理意义。实验是在NV的自旋-1接地状态的两级子空间上进行的，其中Aharonov-Anandan几何相将自己表现为一个全局相，我们使用NV基态三重态的第三级来检测它。我们表明，虽然几何aharonov-anandan阶段保留了与不断发展的自旋扫除的实体角度的联系，但通常伴随着一个动态相，可以抑制系统动力学的几何依赖性。这些结果提供了有关依赖框架几何阶段的物理意义的见解。
We use a combination of microwave fields and free precession to drive the spin of a nitrogen-vacancy (NV) center in diamond on different trajectories on the Bloch sphere, and investigate the physical significance of the frame-dependent decomposition of the total phase into geometric and dynamic parts. The experiments are performed on a two-level subspace of the spin-1 ground state of the NV, where the Aharonov-Anandan geometric phase manifests itself as a global phase, and we use the third level of the NV ground state triplet to detect it. We show that while the geometric Aharonov-Anandan phase retains its connection to the solid angle swept out by the evolving spin, it is generally accompanied by a dynamic phase that suppresses the geometric dependence of the system dynamics. These results offer insights into the physical significance of frame-dependent geometric phases.
