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arXiv · 2609.28185

Separating multi-particle dynamics by intensity cycling

Pavel Malý·František Trojánek·Petr Malý·Jérémie Léonard
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Abstract

We address the interpretation of transient spectroscopy signals proportional to average excitation number in terms of discrete number of excitations. Building on our recent intensity cycling approach, we derive a general scheme to isolate multi-particle dynamics from any transient signal under minimal assumptions. The key result is a general formula expressing the extracted nonlinear signal terms by multi-excitation propagators. We demonstrate the approach on exciton transport and annihilation in organic nanoparticles, and carrier recombination in silicon nanocrystals.

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Pavel Malý, František Trojánek, Petr Malý, Jérémie Léonard. 2026-09-23. Separating multi-particle dynamics by intensity cycling. https://arxiv.org/abs/2609.28185

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