Speaker: Lukas Vetter
Affiliation: Technical University of Munich, TUM
Date: Tuesday, 11 November 2025 at 12:00
Location: Seminar Room, Serrano 113b
Efficient, and robust techniques for state transfer and entanglement generation are vital for the progress of quantum technologies. Thouless pumping enables the topologically robust and chiral transfer of excitations in quantum systems. However, dispersion during the protocol leads to losses in transfer fidelity. Here, we introduce a protocol for high-fidelity state transfer based on Thouless Pumping with Bloch Oscillations to suppress dispersion. Our protocol enables the transfer of single and multi-excitation Fock states and Bell states with high fidelity while being robust against perturbations of the Hamiltonian. We describe the effect of Bloch Oscillations using semi-classical equations of motion and show that changing the pumping cycle enables the generation of distant Bell pairs. We experimentally implement our results on a superconducting qubit device by realizing the pumping on a tunable coupler architecture achieving fidelities up to 86% for Fock states. Our work paves the way for using Thouless pumping in quantum information processing, with applications in entanglement generation, and multi-qubit gates.