Haber Johann, Gollwitzer Jakob, Francoual Sonia, Tolkiehn Martin, Strempfer Jörg, Röhlsberger Ralf
Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany.
The Hamburg Center for Ultrafast Imaging, Luruper Chaussee 149, 22761 Hamburg, Germany.
Phys Rev Lett. 2019 Mar 29;122(12):123608. doi: 10.1103/PhysRevLett.122.123608.
By embedding a thin layer of tantalum in an x-ray cavity, we observe a change in the spectral characteristics of an inner-shell transition of the metal. The interaction between the cavity mode vacuum and the L_{III}-edge transition is enhanced, permitting the observation of the collective Lamb shift, superradiance, and a Fano-like cavity-resonance interference effect. This experiment demonstrates the feasibility of cavity quantum electrodynamics with electronic resonances in the x-ray range with applications to manipulating and probing the electronic structure of condensed matter with high-resolution x-ray spectroscopy in an x-ray cavity setting.
通过在X射线腔中嵌入一层薄钽，我们观察到了金属内壳层跃迁光谱特性的变化。腔模真空与LIII边缘跃迁之间的相互作用增强，使得能够观测到集体兰姆位移、超辐射以及类似法诺的腔共振干涉效应。该实验证明了在X射线范围内利用电子共振进行腔量子电动力学的可行性，其应用包括在X射线腔环境中通过高分辨率X射线光谱法来操纵和探测凝聚态物质的电子结构。
