Parts | Days | Selection | Search | Updates | Downloads | Help
FRI: Friday Contributed Sessions
FRI 3: Quantum Chaos
FRI 3.3: Talk
Friday, September 12, 2025, 11:15–11:30, ZHG003
Controlling Many-Body Quantum Chaos — •Lukas Beringer1, Mathias Steinhuber1, Juan Diego Urbina1, Klaus Richter1, and Steven Tomsovic1,2 — 1Institut für Theoretische Physik, Universität Regensburg, Regensburg, Germany — 2Department of Physics and Astronomy, Washington State University, Pullman, WA USA
Controlling chaos is a well-established technique that leverages the exponential sensitivity of classical chaotic systems for efficient control. This concept has been generalized to single-particle quantum systems [1] and, more recently, extended to bosonic many-body quantum systems described by the Bose-Hubbard model [2]. In direct analogy to the classical paradigm, a localized quantum state can be transported along a specific trajectory to a desired target state. In the bosonic many-body case, this approach reduces to time-dependent control of the chemical potentials, making it suitable for rapid and customizable state preparation in optical lattice experiments. We discuss how this protocol can serve as a toolbox for studying many-body interference and present recent progress on preparation protocols for entangled states.
[1] S. Tomsovic, J. D. Urbina, and Klaus Richter, Controlling Quantum Chaos: Optimal Coherent Targeting, PRL 130.2 (2023): 020201.
[2] L. Beringer, M. Steinhuber, J. D. Urbina, K. Richter, S. Tomsovic, Controlling many-body quantum chaos: Bose-Hubbard systems, New J. Phys (2024): 26 073002.
Keywords: many-body quantum chaos; quantum control; cold gases in optical lattices; Bose-Hubbard; far-from-equilibrium dynamics