Mainz 2026 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 43: Poster – Quantum Systems
Q 43.1: Poster
Mittwoch, 4. März 2026, 17:00–19:00, Philo 2. OG
Markovian feedback control of interacting models — •Allano Gregor Johannes Celestino Maritano1, André Eckardt1, and Ling-Na Wu2 — 1Technische Universität Berlin, Berlin, Germany — 2Hainan University, Haikou, China
We study Markovian feedback control for state preparation and cooling of bosonic atoms in a one-dimensional optical lattice, building on a recently proposed scheme for measurement-based feedback. Using weak homodyne detection and feedback control, we explore how to steer the system towards selected many-body eigenstates with high fidelity in regimes dominated by strong interactions.
In this context, we analyze the time evolution of the system under feedback, exploring optimal control strategies for settling to the steady state and the relation between the Hamiltonian eigenstates and the resulting steady state. Overall, the project aims at identifying feedback and measurement operator structures that accelerate convergence to steady states in strongly interacting systems, thereby improving control performance and enabling future experiments on excited eigenstates and quantum transport phenomena in optical lattices.
Keywords: Markovian feedback control; Quantum measurement and control; Interacting bosons; Optical lattices; Quantum state preparation