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Updated: Aug 14, 2025

Study of Protein Dynamics via Neutron Spin Echo Spectroscopy
Published on: April 13, 2022
Ultrafast spin dynamics: complementing theoretical analyses by quantum state measures
Franziska Ziolkowski1, Oliver Busch1, Ingrid Mertig1
1Institut für Physik, Martin Luther University Halle-Wittenberg, 06099 Halle, Germany.
Abstract:
In theoretical analyses of ultrafast spin dynamics simulated phenomena are commonly discussed in terms of observables. In this paper we report on possible benefits of complementing such studies by quantum state (QS) measures. These measures quantify specific properties of QSs, e.g. distance in Hilbert space and mixing. For Co/Cu heterostructures illuminated by femtosecond laser pulses, we discuss the general behavior of selected measures, but address in particular the degree of perturbation by a laser pulse. It turns out that the measures are especially sensitive to variations of the polarization of a laser pulse and the sample composition. Moreover, they are closely linked to magnetization and number of photo-excited electrons.
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