Dipolar optimal control of quantum states

Dipolar optimal control of quantum states

Seminar author:Héctor Briongos Merino

Event date and time:12/11/2025 02:30:pm

Event location:Seminars Room, GIQ

Event contact:

Quantum state control is a fundamental tool for quantum technologies. In this work, we propose and analyze the use of quantum optimal control that exploits the dipolar interaction of ultracold atoms on a lattice ring, focusing on the generation of chosen states with entangled circulation. This scheme requires control over the orientation of the magnetic field over time, which can be done in ultracold atom laboratories. This control drives the evolution of the system’s state with just two independent functions. We describe the symmetry constraints and other requirements of this approach and numerically test them on the extended Bose-Hubbard model. We find that the proposed control can engineer entangled current states with complete fidelity in a wide range of systems, and that the predicted maximal fidelity bounds are attained in all other cases.