Hannover 2020 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 22: Posters: Quantum Optics and Photonics II

Q 22.22: Poster

Tuesday, March 10, 2020, 16:30–18:30, Empore Lichthof

Overlapping modes effects in X-ray cavity QED — •Dominik Lentrodt, Kilian P. Heeg, Christoph H. Keitel, and Jörg Evers — Max-Planck-Institut für Kernphysik, Heidelberg, Germany

In recent years, a new platform for quantum optics has emerged: nuclear cavity QED, where Mössbauer nuclei are placed in nano-cavities and driven by hard X-ray sources. Due to the unique properties of these nuclei, such as exceptionally long decoherence times, and the high photon energies of hard X-rays, this system constitues one of the highest quality quantum systems in nature, with possible applications ranging from metrology and precision spectroscopy to materials and even quantum information science. In this poster, we show novel cavity QED effects that arise in this system due to the overlapping modes stucture of the cavities in use, and how to harness them for quantum optical purposes. In particular, we outline how these effects can be described theoretically within the framework of ab initio few-mode theory [1], which provides access to new interpretations of the collective Lamb shift [2], which was famously discovered in this system, and an EIT phenomenon [3], which is promising with regards to achieving non-linear effects at current and upcoming X-ray facilities [4].

[1] Lentrodt & Evers (2018) arXiv:1812.08556 [quant-ph] [2] Röhlsberger et. al. Science 328 5983 (2010), Heeg et. al. Phys. Rev. Lett. 114 207401 (2015) [3] Röhlsberger et. al. Nature 482 199203 (2012), Heeg & Evers Phys. Rev. A 91 063803 (2015) [4] Heeg, Keitel & Evers (2016) arXiv:1607.04116 [quant-ph]