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Article Dans Une Revue Journal of Chemical Physics Année : 2016

Non-Hermitian wave packet approximation for coupled two-level systems in weak and intense fields

Résumé

We introduce a non-Hermitian Schrödinger-type approximation of optical Bloch equations for two-level systems. This approximation provides a complete and accurate description of the coherence and decoherence dynamics in both weak and strong laser fields at the cost of losing accuracy in the description of populations. In this approach, it is sufficient to propagate the wave function of the quantum system instead of the density matrix, providing that relaxation and dephasing are taken into account via automatically adjusted time-dependent gain and decay rates. The developed formalism is applied to the problem of scattering and absorption of electromagnetic radiation by a thin layer comprised of interacting two-level emitters.

Dates et versions

hal-04380082 , version 1 (08-01-2024)

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Raiju Puthumpally-Joseph, Maxim Sukharev, Eric Charron. Non-Hermitian wave packet approximation for coupled two-level systems in weak and intense fields. Journal of Chemical Physics, 2016, 144 (15), ⟨10.1063/1.4947140⟩. ⟨hal-04380082⟩
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