eprintid: 34089
rev_number: 20
eprint_status: archive
userid: 7771
dir: disk0/00/03/40/89
datestamp: 2023-12-12 06:23:24
lastmod: 2023-12-21 08:50:04
status_changed: 2023-12-12 06:23:24
type: doctoralThesis
metadata_visibility: show
creators_name: Wolff, Lukas Robert Gustav
title: Detecting nonlinear and many-body dynamics in nuclear quantum optics
subjects: ddc-530
divisions: i-851340
adv_faculty: af-13
keywords: Mössbauer
cterms_swd: Quantenoptik
cterms_swd: Spektroskopie
cterms_swd: Kernphysik
abstract: In this thesis, different measurement and data evaluation approaches for the detection and characterization of collective nuclear level schemes arising in the low-excitation regime of thin-film x-ray cavities are discussed. The first approach uses Fourier transforms to analyze time- and frequency-resolved spectra recorded using nuclear reference absorbers. This allows for the extraction of the phase-resolved nuclear resonant response of the sample under investigation. Next, to study the dynamics of nuclear ensembles upon suitably-shaped x-ray light, a density matrix perturbation theory is presented that allows for the study of multi-level and many-body dynamics in the low-excitation regime of the x-ray-nuclei interaction. This method is used to interpret numerical data simulating several experimental scenarios: First, it is used to derive an equivalence between coherently and incoherently scattered x-ray intensity detectable in nuclear resonant scattering experiments, which serves as a criterion for nonlinear excitation of nuclear ensembles at coherent x-ray sources. Second, signatures of couplings between collective excited nuclear states in thin-film cavities upon differently-shaped x-ray pulses are proposed and identified in time-frequency-spectra. Finally, the feasibility of a specific coherent double pulse spectroscopic method under low-excitation conditions is discussed and numerically simulated spectra upon different double pulse sequences are compared.
date: 2023
id_scheme: DOI
id_number: 10.11588/heidok.00034089
ppn_swb: 1876737255
own_urn: urn:nbn:de:bsz:16-heidok-340898
date_accepted: 2023-11-28
advisor: HASH(0x55a71677d848)
language: eng
bibsort: WOLFFLUKASDETECTINGN
full_text_status: public
place_of_pub: Heidelberg
citation:   Wolff, Lukas Robert Gustav  (2023) Detecting nonlinear and many-body dynamics in nuclear quantum optics.  [Dissertation]     
document_url: https://archiv.ub.uni-heidelberg.de/volltextserver/34089/1/PhDThesis_LukasWolff.pdf