Non-secular polariton leakage and dark-state protection in hybrid plasmonic cavities

• URL: http://arxiv.org/abs/2601.21597v1
• Date: Thu, 29 Jan 2026 12:05:23 GMT
• Title: Non-secular polariton leakage and dark-state protection in hybrid plasmonic cavities
• Authors: Marco Vallone,
• Abstract summary: A major issue in exploiting plasmonic cavities as key components in nanotechnology is the effect of radiative and absorption losses on their electrodynamic behavior.<n>Treating them as open-systems, we derive a time-local, completely positive master equation that retains non-secular interference between decay pathways.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: A major issue in exploiting plasmonic cavities as key components in nanotechnology is the effect of radiative and absorption losses on their electrodynamic behavior. Treating them as open-systems, we derive a time-local, completely positive master equation that retains non-secular interference between decay pathways and reduces to the standard secular description when the environment resolves polariton splitting. When it does not, the theory predicts order-one deviations from secular leakage dynamics, including bath-induced coherences and stabilization of dark polaritons, and provides a simple design criterion based on the ratio of polariton splitting to reservoir linewidth. A time-resolved leakage measurement, such as transmission, reflectivity, or photoluminescence, can be used to observe these effects.

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