Controlling core-hole lifetime through an x-ray planar cavity

Abstract

It has long been believed that core-hole lifetime (CHL) of an atom is an intrinsic physical property, and controlling it is significant yet is very hard. Here, CHL of the 2p state of W atom is manipulated experimentally through adjusting the emission rate of a resonant fluorescence channel with the assistance of an x-ray thin-film planar cavity. The emission rate is accelerated by a factor linearly proportional to the cavity field amplitude, that can be directly controlled by choosing different cavity modes or changing the angle offset in experiment. This experimental observation is in good agreement with theoretical predictions. It is found that the manipulated resonant fluorescence channel even can dominate the CHL. The controllable CHL realized here will facilitate the nonlinear investigations and modern x-ray scattering techniques in hard x-ray region.

5 pages, 4 figures

References in corpus (7)

• Photon-mediated interactions between distant artificial atoms
• Spin excitations in a single La${}_2$CuO${}_4$ layer
• Interferometric phase detection at x-ray energies via Fano resonance control
• Tunable sub-luminal propagation of narrowband x-ray pulses
• Ultrashort Lifetime Expansion for Indirect Resonant Inelastic X-ray Scattering
• Theory for Time-Resolved Resonant Inelastic X-ray Scattering
• Collective effects between multiple nuclear ensembles in an x-ray cavity-QED setup

Cited by in corpus (6)

• Inverse design of artificial two-level systems with Mössbauer nuclei in thin-film cavities
• Quantum Nanophotonics with Energetic Particles:X-rays and Free Electrons
• Inverse design in nuclear quantum optics: From artificial x-ray multi-level schemes to spectral observables
• Excitation of narrow x-ray transitions in thin-film cavities by focused pulses
• Charge transfer energy and band filling effects on two-hole Auger resonances in strongly correlated systems
• Cavity Controls Core-to-Core Resonant Inelastic X-ray Scattering