Collective Quantum Dynamics

The research of Rudolf Mößbauer Tenure Track Professor Michael Knap aims at a broad range of questions from condensed matter theory and bridges to quantum optics, atomic physics, and computational sciences. Interactions and correlations in condensed matter systems often manifest in striking and novel properties. These properties emerge from collective behavior of the quantum particles. Many examples can be found in nature, including superconductors, quantum magnets and superfluids. The main focus of Knap's work has been on the development of analytical and numerical techniques to elucidate the effects of strong interactions. His research has addressed various questions in non-equilibrium quantum dynamics and transport in ultracold quantum gases, interacting light-matter systems, and correlated quantum materials.

TUM-IAS funded postdoctoral researcher:
Dr. Johannes Oberreuter, Collective Quantum Dynamics

TUM-IAS funded doctoral candidates:
Simon Weidinger (PhD in 2018), Collective Quantum Dynamics
Annabelle Bohrdt, Collective Quantum Dynamics

Publications by the Focus Group

2018

  • Bohrdt, A.; Greif, D.; Demler, E.; Knap, M.; Grusdt, F.: Angle-resolved photoemission spectroscopy with quantum gas microscopes. Physical Review B 97 (12), 2018 mehr…
  • Knap, Michael: Entanglement production and information scrambling in a noisy spin system. Physical Review B 98 (18), 2018 mehr…
  • Pancotti, Nicola; Knap, Michael; Huse, David A.; Cirac, J. Ignacio; Bañuls, Mari Carmen: Almost conserved operators in nearly many-body localized systems. Physical Review B 97 (9), 2018 mehr…
  • Schmidt, Richard; Knap, Michael; Ivanov, Dmitri A; You, Jhih-Shih; Cetina, Marko; Demler, Eugene: Universal many-body response of heavy impurities coupled to a Fermi sea: a review of recent progress. Reports on Progress in Physics 81 (2), 2018, 024401 mehr…
  • Weidinger, Simon A.; Gopalakrishnan, Sarang; Knap, Michael: Self-consistent Hartree-Fock approach to many-body localization. Physical Review B 98 (22), 2018 mehr…
  • Weidinger, Simon Adrian: Non-equilibrium Field Theory of Condensed Matter Systems - Periodic Driving and Quantum Quenches. Dissertation, 2018 mehr…
  • Žunkovič, Bojan; Heyl, Markus; Knap, Michael; Silva, Alessandro: Dynamical Quantum Phase Transitions in Spin Chains with Long-Range Interactions: Merging Different Concepts of Nonequilibrium Criticality. Physical Review Letters 120 (13), 2018 mehr…

2017

  • Agarwal, Kartiek; Altman, Ehud; Demler, Eugene; Gopalakrishnan, Sarang; Huse, David A.; Knap, Michael: Rare-region effects and dynamics near the many-body localization transition. Annalen der Physik 529 (7), 2017, 1600326 mehr…
  • Babadi, Mehrtash; Knap, Michael; Martin, Ivar; Refael, Gil; Demler, Eugene: Theory of parametrically amplified electron-phonon superconductivity. Physical Review B 96 (1), 2017 mehr…
  • Bohrdt, A; Mendl, C B; Endres, M; Knap, M: Scrambling and thermalization in a diffusive quantum many-body system. New Journal of Physics 19 (6), 2017, 063001 mehr…
  • Bordia, Pranjal; Lüschen, Henrik; Schneider, Ulrich; Knap, Michael; Bloch, Immanuel: Periodically driving a many-body localized quantum system. Nature Physics 13 (5), 2017, 460-464 mehr…
  • Gopalakrishnan, Sarang; Islam, K. Ranjibul; Knap, Michael: Noise-Induced Subdiffusion in Strongly Localized Quantum Systems. Physical Review Letters 119 (4), 2017 mehr…
  • Meinert, Florian; Knap, Michael; Kirilov, Emil; Jag-Lauber, Katharina; Zvonarev, Mikhail B.; Demler, Eugene; Nägerl, Hanns-Christoph: Bloch oscillations in the absence of a lattice. Science 356 (6341), 2017, 945-948 mehr…
  • Weidinger, Simon A.; Heyl, Markus; Silva, Alessandro; Knap, Michael: Dynamical quantum phase transitions in systems with continuous symmetry breaking. Physical Review B 96 (13), 2017 mehr…
  • Weidinger, Simon A.; Knap, Michael: Floquet prethermalization and regimes of heating in a periodically driven, interacting quantum system. Scientific Reports 7 (1), 2017 mehr…

2016

  • Cetina, M.; Jag, M.; Lous, R. S.; Fritsche, I.; Walraven, J. T. M.; Grimm, R.; Levinsen, J.; Parish, M. M.; Schmidt, R.; Knap, M.; Demler, E.: Ultrafast many-body interferometry of impurities coupled to a Fermi sea. Science 354 (6308), 2016, 96-99 mehr…
  • Gopalakrishnan, Sarang; Agarwal, Kartiek; Demler, Eugene A.; Huse, David A.; Knap, Michael: Griffiths effects and slow dynamics in nearly many-body localized systems. Physical Review B 93 (13), 2016 mehr…
  • Gopalakrishnan, Sarang; Knap, Michael; Demler, Eugene: Regimes of heating and dynamical response in driven many-body localized systems. Physical Review B 94 (9), 2016 mehr…
  • Knap, Michael; Babadi, Mehrtash; Refael, Gil; Martin, Ivar; Demler, Eugene: Dynamical Cooper pairing in nonequilibrium electron-phonon systems. Physical Review B 94 (21), 2016 mehr…
  • Wild, Dominik S.; Gopalakrishnan, Sarang; Knap, Michael; Yao, Norman Y.; Lukin, Mikhail D.: Adiabatic Quantum Search in Open Systems. Physical Review Letters 117 (15), 2016 mehr…

2015

  • Agarwal, Kartiek; Gopalakrishnan, Sarang; Knap, Michael; Müller, Markus; Demler, Eugene: Anomalous Diffusion and Griffiths Effects Near the Many-Body Localization Transition. Physical Review Letters 114 (16), 2015 mehr…
  • Babadi, Mehrtash; Demler, Eugene; Knap, Michael: Far-from-Equilibrium Field Theory of Many-Body Quantum Spin Systems: Prethermalization and Relaxation of Spin Spiral States in Three Dimensions. Physical Review X 5 (4), 2015 mehr…
  • Bukov, Marin; Gopalakrishnan, Sarang; Knap, Michael; Demler, Eugene: Prethermal Floquet Steady States and Instabilities in the Periodically Driven, Weakly Interacting Bose-Hubbard Model. Physical Review Letters 115 (20), 2015 mehr…
  • Gopalakrishnan, Sarang; Müller, Markus; Khemani, Vedika; Knap, Michael; Demler, Eugene; Huse, David A.: Low-frequency conductivity in many-body localized systems. Physical Review B 92 (10), 2015 mehr…
  • Smacchia, Pietro; Knap, Michael; Demler, Eugene; Silva, Alessandro: Exploring dynamical phase transitions and prethermalization with quantum noise of excitations. Physical Review B 91 (20), 2015 mehr…