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Interferometric phase detection at x-ray energies via Fano resonance control

MPS-Authors
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Heeg,  Kilian Peter
Division Prof. Dr. Christoph H. Keitel, MPI for Nuclear Physics, Max Planck Society,;

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Ott,  Christian
Division Prof. Dr. Thomas Pfeifer, MPI for Nuclear Physics, Max Planck Society;

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Pfeifer,  Thomas
Division Prof. Dr. Thomas Pfeifer, MPI for Nuclear Physics, Max Planck Society;

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Evers,  Jörg
Division Prof. Dr. Christoph H. Keitel, MPI for Nuclear Physics, Max Planck Society,;

Fulltext (public)

1411.1545.pdf
(Preprint), 422KB

Supplementary Material (public)
There is no public supplementary material available
Citation

Heeg, K. P., Ott, C., Schumacher, D., Wille, H.-.-C., Röhlsberger, R., Pfeifer, T., et al. (2015). Interferometric phase detection at x-ray energies via Fano resonance control. Physical Review Letters, 114(20): 207401. doi:10.1103/PhysRevLett.114.207401.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0027-8184-F
Abstract
Modern x-ray light sources promise access to structure and dynamics of matter in largely unexplored spectral regions. However, the desired information is encoded in the light intensity and phase, whereas detectors register only the intensity. This phase problem is ubiquitous in crystallography and imaging, and impedes the exploration of quantum effects at x-ray energies. Here, we demonstrate phase-sensitive measurements characterizing the quantum state of a nuclear two-level system at hard x-ray energies. The nuclei are initially prepared in a superposition state. Subsequently, the relative phase of this superposition is interferometrically reconstructed from the emitted x-rays. Our results form a first step towards x-ray quantum state tomography, and provide new avenues for structure determination and precision metrology via x-ray Fano interference.