Aller au contenu principal
  • Paul Scherrer Institut PSI
  • PSI Research, Labs & User Services

Digital User Office

  • Digital User Office
  • DE
  • EN
  • FR
Paul Scherrer Institut (PSI)
Rechercher
Paul Scherrer Institut (PSI)

Hauptnavigation

  • Research at PSIOuvrir ce point de menu principal
    • Research Initiatives
    • Ethics and Research integrity
    • Scientific Highlights
    • Scientific Events
    • Scientific Career
    • PSI-FELLOW
    • PSI Data Policy
  • Research Divisions and LabsOuvrir ce point de menu principal
    • Overview
    • Research with Neutrons and Muons
    • Photon Science
    • Energy and Environment
    • Nuclear Energy and Safety
    • Biology and Chemistry
    • Scientific Computing, Theory and Data
    • Large Research Facilities
    • Logistics
  • Facilities and InstrumentsOuvrir ce point de menu principal
    • Overview
    • Large Research Facilities
    • Facilities
    • PSI Facility Newsletter
  • PSI User ServicesOuvrir ce point de menu principal
    • User Office
    • Methods at the PSI User Facilities
    • Proposals for beam time
    • Proposal Deadlines
    • Data Analysis Service (PSD)
    • EU support programmes
  • New ProjectsOuvrir ce point de menu principal
    • SLS 2.0
    • IMPACT
  • DE
  • EN
  • FR

Digital User Office (mobile)

  • Digital User Office

Vous êtes ici:

  1. PSI Home
  2. Labs & User Services
  3. QTC
  4. Projects
  5. Nonlinear X-ray Spectroscopy

Navigation secondaire

Quantum Technologies Collaboration

  • Projects Sous-menu élargi
    • Non-Destructive Imaging
    • Many-body localisation and hole-burning in random quantum magnets
    • From topology in condensed matter to quantum information and spintronics
    • Topological Quantum States
    • Electronic structure of novel heterostructure systems for quantum electronics
    • Molecular Nanoscience
    • Nonlinear X-ray Spectroscopy
    • Quantum telecommunication and sensing with Spins in Silicon Carbide
  • Facilities
  • People
  • Open positions

Info message

Ce contenu n'est pas disponible en français.

Nonlinear X-ray Spectroscopy

We investigate time resolved multi-wave mixing in the XUV and X-ray spectral range. From the energy- and q - dependent signals, information about ultrafast charge carrier dynamics and about the subsequent energy dissipation into lattice vibrations and heating is obtained. Using a four wave mixing setup these effects can be distinguished by probing the dynamics at different q vectors and both on and off the specific resonances.
FWM schemes invoving two-colors and a schematic of X-ray absorption and emission transitions possibly involved in the process.
FWM schemes invoving two-colors and a schematic of X-ray absorption and emission transitions possibly involved in the process.
After moving a molecular system out of its equilibrium, e.g. by coupling it to a photon field, the system tends to return to its thermodynamic equilibrium on different time scales, depending on the number of gateway states through which the induced excitation can relax. In relation to the size of the quantum system the induced energy and coherence can relax via intra- and intermolecular ways and as such one may speak of relaxation and transport phenomena. In complex many body quantum systems these effects may not be well separated and collective relaxation can give rise to complex dynamics. Unambiguous association of the time and length scales of collective structural and electronic rearrangements and their control requires direct and simultaneous measurement of both. This can be enabled through coherent nonlinear spectroscopy using X-ray wavelengths. In coherent multiphoton spectroscopies interference occurs when two transitions pathways terminate on the same eigenstate. Time-frequency-resolved multi-wave mixing e.g. allows the preparation, manipulation, and readout of massive quantum superpositions with sufficient control to consider applications towards driving and investigation of the ongoing dynamics.

Sidebar

Contact

Dr. Gregor Knopp
Nonlinear X-ray Spectroscopy

Telephone:
+41 56 310 41 08
E-mail:
gregor.knopp@psi.ch

top

Pied de page

Paul Scherrer Institut

Forschungsstrasse 111
5232 Villigen PSI
Suisse

Téléphone: +41 56 310 21 11
Téléfax: +41 56 310 21 99

Comment nous trouver 
Contact

Centre de visiteurs psi forum
Laboratoire élèves iLab (en allemand)
Centre de protonthérapie
Centre de Formation du PSI
PSI Guest House (en anglais)
PSI Gastronomie (en allemand)
psi forum shop

Service & Support

  • Annuaire
  • User Office
  • Accelerator Status
  • Publications du PSI
  • Fournisseurs
  • E-facture
  • Computing (en anglais)
  • Sicherheit (en allemand)

Carrière

  • Travailler au PSI
  • Offres d'emploi
  • Formation initiale et formation continue
  • Career Center
  • Formation professionnelle (en allemand)
  • Centre de Formation du PSI

Pour les médias

  • Le PSI en bref
  • Chiffres et faits
  • Le coin médias
  • Communiqués de presse
  • Réseaux sociaux

Suivez le PSI: Twitter LinkedIn Youtube Facebook Instagram Issuu RSS

Footer legal

  • Impressum
  • Conditions d'utilisation / Protection des données
  • Login éditeurs