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| Book/Report/Dissertation / PhD Thesis | PUBDB-2017-02595 |
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2017
Verlag Deutsches Elektronen-Synchrotron
Hamburg
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Please use a persistent id in citations: doi:10.3204/PUBDB-2017-02595
Report No.: DESY-THESIS-2017-024
Abstract: This thesis describes quantum optical experiments with x-rays with the aim of reaching the strong-coupling regime of light and matter. We make use of the interaction which arisesbetween resonant matter and x-rays in specially designed thin-film nanostructures which form x-ray cavities. Here, the resonant matter are Tantalum atoms and the Iron isotope $^{57}$Fe. Both limit the number of modes available to the resonant atoms for interaction, and enhances the interaction strength. Thus we have managed to observe a number of phenomena well-known in quantum optics, which are the building blocks for sophisticated applications in e.g. metrology. Among these are the strong coupling of light and matter and the concurrent exchange of virtual photons, often called Rabi oscillations. Furthermore we have designed and tested a type of cavity hitherto unused in x-ray optics. Finally, we develop a new method for synchrotron Mössbauer spectroscopy, which not only promises to yield high-resolution spectra, but also enables the retrieval of the phase of the scattered light. The results open new avenues for quantum optical experiments with x-rays, particularly with regards to the ongoing development of high-brilliance x-ray free-electron lasers.
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