% IMPORTANT: The following is UTF-8 encoded.  This means that in the presence
% of non-ASCII characters, it will not work with BibTeX 0.99 or older.
% Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or
% “biber”.

@ARTICLE{Schwickert:479274,
      author       = {Schwickert, David and Ruberti, Marco and Kolorenč, Přemys
                      and Usenko, Sergey and Przystawik, Andreas and Baev, Karolin
                      and Baev, Ivan and Braune, Markus and Bocklage, Lars and
                      Czwalinna, Marie Kristin and Deinert, Sascha and Düsterer,
                      Stefan and Hans, Andreas and Hartmann, Gregor and Haunhorst,
                      Christian and Kuhlmann, Marion and Palutke, Steffen and
                      Roehlsberger, Ralf and Rönsch-Schulenburg, Juliane and
                      Schmidt, Philipp and Toleikis, Sven and Viefhaus, Jens and
                      Martins, Michael and Knie, Andre and Kip, Detlef and
                      Averbukh, Vitali and Marangos, Jon and Laarmann, Tim},
      title        = {{E}lectronic {Q}uantum {C}oherence in {G}lycine {M}olecules
                      {P}robed with {U}ltrashort {X}-ray {P}ulses in {R}eal
                      {T}ime},
      reportid     = {PUBDB-2022-02957, arXiv:2012.04852},
      year         = {2020},
      note         = {61 pages, 12 figures},
      abstract     = {Quantum coherence between electronic states of a
                      photoionized molecule and the resulting process of ultrafast
                      electron-hole migration have been put forward as a possible
                      quantum mechanism of charge-directed reactivity governing
                      the photoionization-induced molecular decomposition.
                      Attosecond experiments based on the indirect (fragment
                      ion-based) characterization of the proposed electronic
                      phenomena suggest that the photoionization-induced
                      electronic coherence can survive for tens of femtoseconds,
                      while some theoretical studies predict much faster decay of
                      the coherence due to the quantum uncertainty in the nuclear
                      positions and the nuclear-motion effects. The open questions
                      are: do long-lived electronic quantum coherences exist in
                      complex molecules and can they be probed directly, i.e. via
                      electronic observables? Here, we use x-rays both to create
                      and to directly probe quantum coherence in the photoionized
                      amino acid glycine. The outgoing photoelectron wave leaves
                      behind a positively charged ion that is in a coherent
                      superposition of quantum mechanical eigenstates lying within
                      the ionizing pulse spectral bandwidth. Delayed x-ray pulses
                      track the induced coherence through resonant x-ray
                      absorption that induces Auger decay and by the photoelectron
                      emission from sequential double photoionization. Sinusoidal
                      temporal modulation of the detected signal at early times (0
                      - 25 fs) is observed in both measurements. Advanced ab
                      initio many-electron simulations, taking into account the
                      quantum uncertainty in the nuclear positions, allow us to
                      explain the first 25 fs of the detected coherent quantum
                      evolution in terms of the electronic coherence.},
      keywords     = {photoelectron, emission (INSPIRE) / coherence (INSPIRE) /
                      nucleus (INSPIRE) / spectral (INSPIRE) / long-lived
                      (INSPIRE) / modulation (INSPIRE) / Auger (INSPIRE) / quantum
                      mechanics (INSPIRE) / ion (INSPIRE) / tracks (INSPIRE) /
                      absorption (INSPIRE) / X-ray (INSPIRE)},
      cin          = {FS-PS / DOOR ; HAS-User / FS-FLASH-O / FS-FLASH-D / MSK},
      cid          = {I:(DE-H253)FS-PS-20131107 / I:(DE-H253)HAS-User-20120731 /
                      I:(DE-H253)FS-FLASH-O-20160930 /
                      I:(DE-H253)FS-FLASH-D-20160930 / I:(DE-H253)MSK-20120731},
      pnm          = {631 - Matter – Dynamics, Mechanisms and Control
                      (POF4-631) / 6G2 - FLASH (DESY) (POF4-6G2) / DFG project
                      390715994 - EXC 2056: CUI: Advanced Imaging of Matter
                      (390715994) / DFG project 194651731 - EXC 1074: Hamburger
                      Zentrum für ultraschnelle Beobachtung (CUI): Struktur,
                      Dynamik und Kontrolle von Materie auf atomarer Skala
                      (194651731)},
      pid          = {G:(DE-HGF)POF4-631 / G:(DE-HGF)POF4-6G2 /
                      G:(GEPRIS)390715994 / G:(GEPRIS)194651731},
      experiment   = {EXP:(DE-H253)F-FL24-20150901},
      typ          = {PUB:(DE-HGF)25},
      eprint       = {2012.04852},
      howpublished = {arXiv:2012.04852},
      archivePrefix = {arXiv},
      SLACcitation = {$\%\%CITATION$ = $arXiv:2012.04852;\%\%$},
      doi          = {10.3204/PUBDB-2022-02957},
      url          = {https://bib-pubdb1.desy.de/record/479274},
}