论文标题
微波精光的双重共振在掺杂的耳语 - 窃窃私语模式谐振器中
Microwave-optical double resonance in a erbium-doped whispering-gallery-mode resonator
论文作者
论文摘要
我们展示了带有光学模式的Erbium掺杂的窃窃私语模式谐振器，其固有质量因子比$ 10^8 $（少于2 MHz的线宽）更好，并为集体的ERBIUM过渡提供了高达2美元的Erbium Trunctitive Erbium Thimes $ 1.2 GHz的耦合强度 - 足以达到即将到达的强度强度的强度。我们的光腔位于微波谐振器内，使我们能够探测由外部磁场调整的自旋跃迁。我们显示了一个修改的光学检测到的磁共振测量，该测量通过耦合强度而不是吸收系数的变化来衡量种群的转移。通过强耦合到我们的模式，启用了这种修改，并使我们能够光学地探测比不均匀线宽的旋转过渡。我们将这种测量与电子顺磁共振相反，以实验表明我们的光学模式局限于大型微波磁场区域，我们探索如何将这种几何形状用于相干的微波光转导。
We showcase an erbium-doped whispering-gallery-mode resonator with optical modes that display intrinsic quality factors better than $10^8$ (linewidths less than 2 MHz), and coupling strengths to collective erbium transitions of up to 2$π\times$1.2 GHz - enough to reach the ensemble strong coupling regime. Our optical cavity sits inside a microwave resonator, allowing us to probe the spin transition which is tuned by an external magnetic field. We show a modified optically detected magnetic resonance measurement that measures population transfer by a change in coupling strength rather than absorption coefficient. This modification was enabled by the strong coupling to our modes, and allows us to optically probe the spin transition detuned by more than the inhomogeneous linewidth. We contrast this measurement with electron paramagnetic resonance to experimentally show that our optical modes are confined in a region of large microwave magnetic field and we explore how such a geometry could be used for coherent microwave-optical transduction.
