The MCQST Colloquium Series features interdisciplinary talks given by visiting international speakers. The monthly colloquium covers topics spanning all MCQST research units and will be broadcast live via Zoom for audiences worldwide. The main goal of the series is to create the framework for idea exchange, to strengthen links with QST leading groups worldwide, as well as to act as an integral part of the local educational environment.

MCQST Colloquium: Tilman Esslinger

We are excited to invite you to the colloquium talk by Tilman Esslinger from ETH Zurich, Switzerland.

Agenda

14:00 | Teaser talk by Dr. Pascal Weckesser (MPQ) on "Repulsively-bound pair states in the 1D extended Hubbard model"

14:15 | Coffee break

14:30 | Colloquium talk by Tilman Esslinger on “Intertwined entanglement in topological pumps”

Intertwined entanglement in topological pumps

We create spatially separated Bell pairs from double occupancies in a fermionic lattice gas using a bidirectional Thouless pump. By controlling the interaction, exactly one atom of the double occupancy occupies the lower and the other the upper band of the topological pump, each experiencing opposite Chern numbers. Topological pumping therefore transports the two correlated components in opposite directions, further separating them with each pumping cycle. During the pumping we apply (SWAP) gates, which allow the entangled pairs to pass through each other, giving rise to intertwined entanglement over many lattice sites. As a result, we observe distinctive frequencies and multi-frequency patterns in singlet-triplet oscillations. Perspectives of the scheme for quantum computation, simulation and sensing will be discussed.

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Meeting-ID: 614 2637 2835, Passcode: mcqst2025