发表机构
Humboldt-Universität zu Berlin（柏林洪堡大学）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
该研究提出一种利用稀土离子晶体长寿命超精细相干性进行应变传感的方案，通过相位控制射频脉冲和动态去耦实现相位累积，从而测量非克莱默稀土掺杂材料中难以直接获取的基态超精细跃迁应变位移。
AI 中文摘要
稀土离子晶体中的长寿命超精细相干性为计量学提供了受控的相位演化窗口。我们利用这一资源提出了一种实验方案，用于获取非克莱默稀土离子掺杂（REID）材料中基态超精细跃迁的应变位移，这一量难以通过传统光谱方法直接测量。从晶体场哈密顿量出发，我们将响应与应变相关的有效四极张量和塞曼张量联系起来，包括电子波函数的变化、虚电子混合以及裸核四极相互作用。该方案通过光学方法制备选定的超精细类别，使用相位控制的射频π/2脉冲创建传感相干性，并在相位演化间隔期间施加同步的动态去耦脉冲，使得相干的交流应变驱动累积相位而非平均掉。累积的相位随后通过拉曼外差读出进行提取。所得到的框架为理解非克莱默REID系统中应变诱导的超精细耦合提供了途径。
英文摘要
Long-lived hyperfine coherences in rare-earth-ion crystals provide controlled phase evolution windows for metrology. We use this resource to propose an experimental protocol for accessing strain shifts of ground state hyperfine transitions in non-Kramers rare-earth-ion doped (REID) materials, a quantity that is difficult to access directly with conventional spectroscopic methods. Starting from the crystal field Hamiltonian, we relate the response to strain-dependent effective quadrupole and Zeeman tensors, including changes in electronic wave functions, virtual electronic admixtures, and the bare nuclear quadrupole interaction. The protocol optically prepares a selected hyperfine class, uses a phase-controlled rf $π/2$ pulse to create the sensing coherence, and applies synchronized dynamical decoupling pulses during the phase evolution interval so that a coherent ac strain drive accumulates phase rather than averaging away. The accumulated phase is then retrieved by Raman heterodyne readout. The resulting framework provides a route to understanding strain-induced hyperfine couplings in non-Kramers REID systems.
Comments14 pages, 3 figures. Revised version following the first round of referee comments
