Density Matrices: Connection Between Experiment and Theory

  • Nils AndersenEmail author
  • Klaus Bartschat
Part of the Springer Series on Atomic, Optical, and Plasma Physics book series (SSAOPP, volume 96)


A general mathematical framework is provided. The definition of scattering amplitudes is reviewed and (reduced) density matrices are introduced for various experimental setups, such as the “generalized STU parameters.” The density matrix is parameterized in terms of irreducible tensor operators. The corresponding state multipoles, with special emphasis on their transformation properties and time evolution, are discussed. Finally, the general equations for the Stokes parameters are presented in this framework with \(\mathrm{S} \rightarrow \mathrm{P}\) excitation as an example.


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© Springer International Publishing AG 2017

Authors and Affiliations

  1. 1.Niels Bohr InstituteUniversity of CopenhagenCopenhagenDenmark
  2. 2.Department of Physics and AstronomyDrake UniversityDes MoinesUSA

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