Freiburg 2019 – wissenschaftliches Programm

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FM: Fall Meeting

FM 17: Quantum Computation: Simulation I

FM 17.3: Talk

Montag, 23. September 2019, 17:00–17:15, 1010

Defect-free assembly of 2D clusters of more than 100 single-atom quantum systems in a multilayer Talbot optical lattice — •Malte Schlosser, Daniel Ohl de Mello, Dominik Schäffner, Tilman Preuschoff, Lars Kohfahl, Jan Werkmann, and Gerhard Birkl — Institut für Angewandte Physik, TU Darmstadt, Schlossgartenstraße 7, 64289 Darmstadt, Germany

Efficient quantum simulation and quantum information processing requires scalable architectures that guarantee the allocation of large-scale qubit resources. In our work, we focus on the implementation of multi-site geometries based on microoptical elements that readily provide thousands of sites for single-atom quantum systems with Rydberg-mediated interactions.

We report on the realization of a novel platform for the creation of 3D multilayer configurations of planar arrays: a microlens-generated Talbot optical lattice [1]. We demonstrate the trapping and imaging of rubidium atoms in integer and fractional Talbot planes and realize the in-plane assembly of defect-free arrays of up to 111 neutral atoms, building on a 361-site subset of traps [2]. By performing multiple assembly cycles in rapid succession, we drastically increase achievable structure sizes and success probabilities. We implement repeated target pattern reconstruction after atom loss and deterministic transport of partial atom clusters.

[1] M. Schlosser et. al., arXiv:1902.05424 (2019).

[2] D. Ohl de Mello et. al., Phys. Rev. Lett. 122, 203601 (2019).