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Vacuum-Assisted Generation and Control of Atomic Coherences at X-Ray Energies

MPG-Autoren
http://pubman.mpdl.mpg.de/cone/persons/resource/persons37703

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

http://pubman.mpdl.mpg.de/cone/persons/resource/persons30455

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

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Zitation

Heeg, K. P., Wille, H.-C., Schlage, K., Guryeva, T., Schumacher, D., Uschmann, I., et al. (2013). Vacuum-Assisted Generation and Control of Atomic Coherences at X-Ray Energies. Physical Review Letters, 111(7): 073601, pp. 1-5. doi:10.1103/PhysRevLett.111.073601.


Zitierlink: http://hdl.handle.net/11858/00-001M-0000-0014-48A5-8
Zusammenfassung
The control of light-matter interaction at the quantum level usually requires coherent laser fields. But already an exchange of virtual photons with the electromagnetic vacuum field alone can lead to quantum coherences, which subsequently suppress spontaneous emission. We demonstrate such spontaneously generated coherences (SGC) in a large ensemble of nuclei operating in the x-ray regime, resonantly coupled to a common cavity environment. The observed SGC originates from two fundamentally different mechanisms related to cooperative emission and magnetically controlled anisotropy of the cavity vacuum. This approach opens new perspectives for quantum control, quantum state engineering and simulation of quantum many-body physics in an essentially decoherence-free setting.