Greenhorn Meeting 2026

Session

Optics and Tweezer design

5 Oct 2026, 10:30

Institute for Quantum Physics

6. Developing a Hybrid Tweezer Array of Dipolar Molecules and Rydberg Atoms

Erik Geesmann (Leibniz Universität Hannover)

05/10/2026, 10:30

Talk

Hybrid tweezer arrays of molecules and atoms represent a novel and promising platform for quantum science and technology. Optical tweezers enable highly flexible and dynamic trapping configurations. With their rich internal level structures and long rotational state coherence times, molecules are well suited for storing quantum information and can serve as excellent qubits. Their interactions...

18. Cavity array microscope for fast, scalable readout of a dual-element atom array

Bahar Öztürk (uni-muenchen)

05/10/2026, 10:45

Talk

In atom–cavity platforms, fast readout of individual atom states remains a key bottleneck for scalability the system. We implement a cavity array microscope — a parallel atom–cavity interface for simultaneous, cavity-enhanced readout and atom–photon interfacing in a rubidium–ytterbium Rydberg array — to improve readout times and networking rates. Rather than pursuing a short, high-finesse...

22. Fast, dynamic and three-dimensional SLM holography for optical tweezers

Maximilian Kob (5th Institute of Physics, University of Stuttgart)

05/10/2026, 11:00

Talk

We report on progress towards a fully dynamical optical tweezer platform employing a fast, phase-only spatial light modulator (SLM) within the QRydDemo experiment, a neutral-atom quantum computing demonstrator based on the Strontium fine-structure qubit [1,2]. Due to intensity flickering along sequences of Gerchberg–Saxton-based holograms, smooth transitions between frames are generated using...

27. Design of an Objective for a Single Atom Optical Tweezer

Nessa Baum

05/10/2026, 11:45

Talk

Optical tweezers are a powerful tool for the manipulation of neutral atoms in ultracold quantum gases. In particular single atom optical tweezers have become an established technique in state of the art quantum gas experiments. Thus retrofitting existing experimental setups with single atom tweezers allows for exploration of novel physics beyond original experimental capabilities. However, in...

37. Toward Near-Unity Photon Collection with a High-NA Solid-Immersion Lens System

Jan Erik Axmann (Leibniz Universität Hannover)

05/10/2026, 12:00

Talk

Photon collection plays an important role in super-resolution microscopy, where localization precision strongly depends on the number of detected photons. Here, we present a new lens system combining a semi spherical solid immersion lens with an aspherical relay lens, designed to achieve an effective numerical aperture above 2.0 and near-unity collection efficiency. In addition to improving...