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Q: Fachverband Quantenoptik und Photonik

Q 48: Quantum Effects II

Q 48.5: Talk

Thursday, March 17, 2022, 11:30–11:45, Q-H13

Inverse design approach to x-ray cavity quantum optics with Mössbauer nuclei — Oliver Diekmann, Dominik Lentrodt, and •Jörg Evers — Max Planck Institute for Nuclear Physics, Heidelberg

Nanometer-sized thin-film cavities containing ensembles of Mössbauer nuclei have been demonstrated to be a rich platform for x-ray quantum optics. At low excitation, these systems can be described by effective few-level schemes, thereby providing tunable artificial quantum systems at hard x-ray energies. With the recent advent of an ab-initio theory [1,2], a numerically efficient description of these systems is now possible. On this basis, we introduce the inverse design and develop a comprehensive optimization which allows one to determine optimum cavity systems realizing few-level schemes with desired properties [3]. Using this approach, we characterize the accessible parameter spaces of artificial two- and three-level systems and determine optimum cavity designs for several applications. Further, we discover a number of qualitative insights into x-ray photonic environments for nuclei that will likely impact the design of future x-ray cavities and thereby improve their performance.

[1] D. Lentrodt and J. Evers, Phys. Rev. X 10, 011008 (2020).

[1] D. Lentrodt et al., Phys. Rev. Research 2, 023396 (2020).

[2] O. Diekmann et al., arXiv:2108.01960 [quant-ph].