Cryogenic platform for coupling color centers in diamond membranes to a fiberbased microcavity

单纳米颗粒中Eu³⁺离子与微腔耦合的多模态珀塞尔增强及光学相干性

Multimodal Purcell enhancement and optical coherence of Eu$^{\text{3+}}$ ions in a single nanoparticle coupled to a microcavity

该研究将铕掺杂纳米颗粒与光纤基微腔耦合，实现Eu³⁺离子两个跃迁的多模态珀塞尔增强（寿命减半、140倍增强）及3.3 MHz窄线宽，为固态单离子量子处理节点奠定基础。

基于光纤法布里-珀罗微腔的4H-SiC中V2色心腔增强

Cavity enhancement of V2 centers in 4H-SiC with a fiber-based Fabry-Pérot microcavity

本研究将4H-SiC薄膜中的V2色心集成到光纤法布里-珀罗微腔中，实现零声子线散射光子13.3倍增强，为确定性自旋-光子相互作用奠定基础。

Dissipative Quantum Feedback in Measurements Using a Parametrically Coupled Microcavity

Micro- and nanoscale optical or microwave cavities are used in a wide range of classical applications and quantum science experiments, ranging from precision measurements, laser technologies to quantum control of mechanical motion. The dissipative photon loss via absorption, present to some extent in any optical cavity, is known to introduce thermo-optical effects and thereby impose fundamental limits on precision measurements. Here, we theoretically and experimentally reveal that such dissipative photon absorption can result in quantum feedback via in-loop field detection of the absorbed opti…

使用冷永磁体对带负电量子点–微腔系统进行共振双激光自旋态光谱研究

Resonant two-laser spin-state spectroscopy of a negatively charged quantum dot-microcavity system with a cold permanent magnet

本文提出低温兼容的紧凑型 SmCo 永磁体，在 5 K 下产生 475 mT 面内磁场，并结合高精细度双折射微腔实现 InGaAs 量子点的单、双激光自旋态光谱与操控。

通过腔集成增强纳米金刚石中单个锗空位色心的光谱密度

Enhanced Spectral Density of a Single Germanium Vacancy Center in a Nanodiamond by Cavity-Integration

本文利用原子力显微镜纳米操控将含单个GeV$^-$色心的纳米金刚石集成到高精细度法布里-珀罗微腔中，实现48倍光谱密度增强，为高效自旋-光子平台奠定基础。

纳米金刚石中单个SnV$^{-}$色心在坏发射体和坏腔区间的可调腔耦合

Tunable cavity coupling of a single SnV$^{-}$ center in nanodiamond across bad-emitter and bad-cavity regimes

本研究实现了纳米金刚石中单个SnV$^{-}$色心与可调微腔的受控耦合，观察到从坏发射体到坏腔区间的转变，并在4 K下测得Purcell因子超过1.7，展示了其作为量子网络单光子源的潜力。

Cavity-enhanced spectroscopy of a few-ion ensemble in Eu3+:Y2O3

We report on the coupling of the emission from a single europium-doped nanocrystal to a fiber-based microcavity under cryogenic conditions. As a first step, we study the sample properties and observe a strong correlation between emission lifetime and brightness, as well as a lifetime reduction for nanocrystals embedded in a polymer film. This is explained by differences in the local density of states. We furthermore quantify the scattering loss of a nanocrystal inside the cavity and use this to deduce the crystal size. Finally, by resonantly coupling the cavity to a selected transition, we per…

单钙钛矿量子点的腔量子电动力学

Cavity quantum electrodynamics with single perovskite quantum dots

本文展示了单个CsPbBr3钙钛矿量子点与光纤法布里-珀罗微腔的确定性可逆耦合，通过共振调谐实现单光子发射速率两倍提升，并评估了真空拉比耦合强度，为优化量子点发射特性奠定基础。