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arXiv · 2108.01960

Inverse design of artificial two-level systems with M\"ossbauer nuclei in thin-film cavities

Oliver Diekmann·Dominik Lentrodt·Jörg Evers
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Abstract

Thin-film cavities containing layers of M\"ossbauer 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, a numerically efficient description of these systems is now possible. On this basis, we introduce the inverse design and develop a comprehensive optimization for an archetype system with a single resonant layer, corresponding to an artificial two-level scheme. 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. The presented methods readily generalize beyond the two-level case and thus provide a clear perspective towards the inverse design of more advanced tunable x-ray quantum optical level schemes.

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Oliver Diekmann, Dominik Lentrodt, Jörg Evers. 2021-08-04. Inverse design of artificial two-level systems with M\"ossbauer nuclei in thin-film cavities. https://doi.org/10.1103/physreva.105.013715

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