Collective effects and superradiance in atomic ensembles

Roth, Alexander

doi:10.15488/3856

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Influence Of High-order Correlations1

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2022

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“…In [20] the density matrix τ A for cumulants was introduced, which makes it possible to estimate any cumulant ⊗ i∈A A αi i similarly:…”

Section: Influence Of High-order Correlationsmentioning

confidence: 99%

Steady-state cooperative effects in a continuously generating superradiant Raman laser

Tikhonov

Roth

2022

Optics and Spectroscopy

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A generalized model of the continuously generating superradiant Raman laser is considered. The model includes competing individual and cooperative atomic processes arising from the interaction of atoms with external light fields. We show that proper selection of the model parameters leads to cooperative effects in the atomic active laser medium. We calculate the steady state values of the atomic polarization and two-atom correlations. Using the quantum regression theorem, we determine the spectral characteristics of the collectively emitted light. We use cumulant expansion to estimate the higher-order correlations between atoms. Keywords: superradiant laser, correlated states of atoms, cooperative effects, cumulant expansion.

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“…In [20] the density matrix τ A for cumulants was introduced, which makes it possible to estimate any cumulant ⊗ i∈A A αi i similarly:…”

Section: Influence Of High-order Correlationsmentioning

confidence: 99%