Rotter, S. (2025). Coherent perfect absorption and emission of light in non-Hermitian and time-varying media. In S. Jorda (Ed.), Non-Hermitian and Topological Photonics (pp. 33–33).
In my talk, I will speak about our recent work on coherent perfect absorption (CPA) [1,2] and emission [3] of light in tailor-made cavities. I will highlight, in particular, the possibility to engineer spatial and spectral degeneracies for broadband absorption of arbitrary wavefronts at an exceptional point as well as the topological aspects associated with perfect emission of thermal radiation. In the second part of my presentation, I will present new insights on the CPA effect in time-varying media, which can be well described by a pseudo-unitary Floquet scattering matrix [4].
[1] Y. Slobodkin, G. Weinberg, H. Hörner, K. Pichler, S. Rotter, and O. Katz, Science
377, 995 (2022)
[2] H. Hörner, L. Wild, Y. Slobodkin, G. Weinberg, O. Katz, and S. Rotter, Phys. Rev.
Lett. 133, 173801 (2024)
[3] M. S. Ergoktas, A. Keçebaş, K. Despotelis, S. Soleymani, G. Bakan, A. Kocabaş, A. Principi, S. Rotter, Ş. K. Özdemir, and C. Kocabaş, Science 384, 1122 (2024)
[4] D. Globosits, J. Hüpfl, and S. Rotter, Phys. Rev. A 110, 053515 (2024)
en
Research facilities:
Vienna Scientific Cluster
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Project title:
Metastrukturen für die Wellenkontrolle in komplexen Medien: PIN7240924 (FWF - Österr. Wissenschaftsfonds)
