Bonn 2025 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 59: Ultra-cold atoms, ions and BEC IV (joint session A/Q)

Q 59.7: Talk

Thursday, March 13, 2025, 16:00–16:15, GrHS Mathe

Parallel entangling gates on a 2D ion-trap lattice — •Lennart Kämmle, Ralf Riedinger, and Ludwig Mathey — University of Hamburg

In current trapped-ion quantum computers ion traps are commonly arranged in a (quasi-)linear configuration. However, this setup is hardware-intensive, limiting the scalability.

In this project we study several versions of 2D geometrics and control setups to improve the efficiency and scalability of trapped-ion quantum computers.

Specifically, we explore the geometric constraints of a 2D ion-trap lattice as well as schemes to apply the Mølmer-Sørensen entangling gate on multiple individual lattice sites in parallel by using local rotations.

Going forward we point out strategies regarding beam leakage and single-site selectivity, to improve the fidelity of parallel quantum entanglement gates in trapped-ion systems.

Keywords: trapped-ion quantum computing