Von der Quantenkontrolle der Elektronen-Loch-Dynamik in polyatomigen Molekülen zur Attosekunden -Laserpuls-Formung

• Antragstellerin: Professorin Dr. Olga Smirnova
• Fachliche Zuordnung: Optik, Quantenoptik und Physik der Atome, Moleküle und Plasmen
• Förderung: Förderung von 2010 bis 2018
• Projektkennung: Deutsche Forschungsgemeinschaft (DFG) - Projektnummer 178262358

• Erstellungsjahr: 2019

Zusammenfassung der Projektergebnisse

Attosecond and strong-field physics develops and uses new methods and tools for controlling, shaping, and imaging dynamics of matter with light, taking advantage of the new opportunities for shaping individual light oscillations. In this project, we demonstrated the sensitivity of the sub-cycle strong-field response to orbital momentum and spin on the sub-cycle timescale. Taking advantage of newly developed analytical theory of strong-field ionization, which has been validated numerically, we have demonstrated generation of ring currents and spin-polarized electron bunches in strong-field ionization, rigorously analysed the impact of Coulomb effects on tunnelling time measurements using the attoclock protocol, developed the concept of Larmor clock for strong-field ionization. We have demonstrated full control over the sub-cycle electron response in IR fields. Since the strong field response is ubiquitous in atoms molecules and solids, our study can enable sub-laser-cycle imaging of magnetic, chiral and topological phenomena in various systems from gas phase molecules to quantum materials. This general vision is supported by our recent results on using these properties of strong field response to distinguish different topological phases on ultrafast time scale.

Projektbezogene Publikationen (Auswahl)

• Ab initio verification of the analytical Rmatrix theory for strong field ionization, J. Phys. B: At. Mol. Opt. Phys. 47 (2014) 204020 (10pp)
  L. Torlina, F. Morales, H G Muller, O Smirnova
  
• Attosecond tunnelling interferometry, J. Phys. B: At. Mol. Opt. Phys. 47 (2014) 124025 (11pp)
  O. Pedatzur, G. Orenstein, V. Serbinenko, H. Soifer, B. D. Bruner, A. J. Uzan, D. S. Brambila, A. G. Harvey, L. Torlina, F. Morales, O. Smirnova and N. Dudovich
  
• Hole dynamics and spin currents after ionization in strong circularly polarized laser fields, J. Phys. B: At. Mol. Opt. Phys. 47 (2014) 204020 (10pp)
  Ingo Barth & Olga Smirnova
  
• Electron spin polarization in strong-field ionization of xenon atoms, Nature Photonics 10 (8), 526, 2015
  Alexander Hartung, Felipe Morales, Maksim Kunitski, Kevin Henrichs, Alina Laucke,Martin Richter, Till Jahnke, Anton Kalinin, Markus Schöffler, Lothar Ph. H. Schmidt, Misha Ivanov,Olga Smirnova and Reinhard Dörner
  
• Interpreting attoclock measurements of tunnelling times, Nature Physics 11 (6), 503 (2015)
  Lisa Torlina, Felipe Morales, Jivesh Kaushal, Igor Ivanov, Anatoli Kheifets, Alejandro Zielinski, Armin Scrinzi, Harm Geert Muller, Suren Sukiasyan, Misha Ivanov and Olga Smirnova
  
• Opportunities for detecting ring currents using an attoclock setup, Phys. Rev. A 92, 063405 (2015)
  J. Kaushal, F. Morales and O. Smirnova
  
• Spin–orbit Larmor clock for ionization times in one-photon and strong-field regimes, J. Phys. B: At. Mol. Opt. Phys. 48 (2015) 234002 (14pp)
  Jivesh Kaushal, Felipe Morales, Lisa Torlina, Misha Ivanov and Olga Smirnova
  
• Coulomb time delays in high harmonic generation, New Journal of Physics 19, 023012, (2017)
  L Torlina, O Smirnova
  
• Looking inside the tunnelling barrier III: spin polarisation in strong field ionisation from orbitals with high angular momentum, J. Phys. B: At. Mol. Opt. Phys. 51 (2018) 174003 (11pp)
  J. Kaushal, & O. Smirnova
  
• Looking inside the tunnelling barrier: I.Strong field ionisation from orbitals with high angular momentum in circularly polarised fields, J. Phys. B: At. Mol. Opt. Phys. 51 (2018) 174001 (15pp)
  J. Kaushal, & O. Smirnova
  
• Looking inside the tunnelling barrier: II. Co and counter-rotating electrons at the ‘tunnelling exit’, J. Phys. B: At. Mol. Opt. Phys. 51 (2018) 174002 (15pp)
  J. Kaushal, & O. Smirnova
  
• Ultrafast preparation and detection of ring currents in single atoms, Nature Physics 14 (7), 701, (2018)
  S Eckart, M Kunitski, M Richter, A Hartung, J Rist, F Trinter, K Fehre, N Schlott, K Henrichs, L Ph H Schmidt, T Jahnke, M Schöffler, K Liu, I Barth, J Kaushal, F Morales, M Ivanov, O Smirnova, R Dörner