The exponential divergence of quasinormal modes: physical or unphysical?

Philippe Lalanne

doi:10.1117/12.3003020

9 March 2024 The exponential divergence of quasinormal modes: physical or unphysical?

Philippe Lalanne

Proceedings Volume PC12895, Quantum Sensing and Nano Electronics and Photonics XX; PC1289511 (2024) https://doi.org/10.1117/12.3003020
Event: SPIE OPTO, 2024, San Francisco, California, United States

Abstract

Nanoresonators enhance many light-matter-interaction processes and are used in various modern applications in nano-quantum optics. They are open systems and their eigenstates are always leaky and have a finite lifetime (complex frequency), even when they are dark states. The consequence of the leakage is that the modal field exponentially growths outside the resonators. This growth is often seen as unphysical. We challenge this opinion.

Conference Presentation

Citation Download Citation

Philippe Lalanne "The exponential divergence of quasinormal modes: physical or unphysical?", Proc. SPIE PC12895, Quantum Sensing and Nano Electronics and Photonics XX, PC1289511 (9 March 2024); https://doi.org/10.1117/12.3003020

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