标题： 铥在固态氩中的晶体场和塞曼效应 显示英文标题

标题： Crystal Fields and Zeeman Effect for Thulium in Solid Argon

摘要： 在惰性固体中悬浮的光学活性缺陷是纳米尺度传感和磁测量的一个有趣系统，同时还是量子信息领域高密度、相同量子发射器的潜在来源。 除了对外部场的响应，光学吸收和发射光谱还反映了关于宿主基质的信息，这对于应用来说至关重要。 对于铥原子掺杂在固态氩中的特定系统，高分辨率激光光谱揭示了1140 nm f到f基态自旋-轨道跃迁的窄集合线宽，该跃迁由于晶体场效应和超精细耦合而分裂。 泵浦-探测光谱用于识别至少两个稳定捕获位点中的晶体场能级，并确定在两个位点中晶体场几乎为轴对称。 强烈的选择规则表明，这种跃迁在氩宿主中变为磁-电跃迁，很可能由于介电效应。 在存在mT磁场的情况下，通过激光荧光可以分辨塞曼位移，从而实现晶体轴选择性偏振光谱。 这些结果表明，使用铥掺杂氩气已经可以实现对直流磁场的全光学检测，并指向更明智的策略来监测和改善晶体生长和退火。 显示英文摘要

摘要： Optically active defects suspended in an inert solid are an interesting system for sensing and magnetometry at the nanometer scale, in addition to being a potential source of high-density, identical quantum emitters for quantum information. Beyond their response to external fields, the optical absorption and emission spectra also reflect information about the host matrix, which is critical to understand for either application. For the particular system of thulium atoms implanted in solid argon, high resolution laser spectroscopy reveals narrow ensemble linewidths of the 1140 nm f to f ground state spin-orbit transition, which is split due to crystal field effects and hyperfine coupling. Pump-probe spectroscopy is used to identify crystal field levels in at least two stable trapping sites, and the crystal field is determined to be nearly axial in both sites. Strong selection rules indicate that this transition becomes magnetic-electric in the argon host, most likely due to dielectric effects. In the presence of mT magnetic fields, Zeeman shifts are resolvable by laser fluorescence, allowing crystal axis selective polarized spectroscopy. These results show that all-optical detection schemes for DC magnetic fields are already possible with thulium-doped argon, and point towards more informed strategies for monitoring and improving crystal growth and annealing.