Parts | Days | Selection | Search | Updates | Downloads | Help

Q: Fachverband Quantenoptik und Photonik

Q 5: Laser Cooling and Trapping

Q 5.1: Talk

Monday, March 2, 2026, 11:45–12:00, P 11

A tweezer system for trapping and addressing single atoms in an optical cavity — •Micha Kappel, Raphael Benz, Sebastián Alejandro Morales Ramirez, Daniel Reigel, Maurizio Trigilia, Luis Weiß, Vincent Beguin, Leon Layer, Violet Ruf, and Stephan Welte — 5. Physikalisches Institut, Universität Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart, Germany

A key building block for a quantum internet is a versatile multi-qubit quantum network node that can process and distribute quantum information. An array of neutral atoms, coupled to an optical cavity, is a promising hardware platform for implementing such a node. In this architecture, the cavity serves as the interface between the stationary atomic qubits and the flying photonic qubits. Leveraging optical tweezers, the atoms in the array are positioned and addressed within the cavity mode.

We present a setup featuring two acousto-optical deflectors that generates multiple optical tweezers for trapping and addressing arrays of ⁸⁷Rb atoms. Using this setup, we plan to trap atoms both within the cavity mode and next to it. This way, we can counteract the inevitable intra-cavity atom losses by reloading atoms from an atom reservoir outside the cavity. We discuss the experimental techniques and challenges associated with our optical setup, and describe the software developed for the project.

Keywords: Optical Tweezer; Optical Cavity; Dynamic Atom Array