A perfect X-ray beam splitter and its applications to time-domain interferometry and quantum optics exploiting free-electron lasers

@article{Reiche2022APX,
  title={A perfect X-ray beam splitter and its applications to time-domain interferometry and quantum optics exploiting free-electron lasers},
  author={Sven Reiche and Gregor Knopp and Bill Francesco Pedrini and Eduard Prat and Gabriel Aeppli and S. Gerber},
  journal={Proceedings of the National Academy of Sciences of the United States of America},
  year={2022},
  volume={119}
}
  • S. Reiche, G. Knopp, S. Gerber
  • Published 1 October 2020
  • Physics
  • Proceedings of the National Academy of Sciences of the United States of America
Significance Brilliant, ultrashort, and coherent X-ray free-electron laser (FEL) pulses allow investigations of dynamics at the inherent time and length scale of atoms. However, missing are sequences of phase-locked X-ray pulses, desirable for time-domain correlation spectroscopies and coherent quantum control. Based on selective electron-bunch degradation in the accelerator, combined with two-stage, self-seeded photon emission, we propose an FEL mode, generating subfemtosecond, phase-locked X… 

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