Bonn 2025 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 51: Quantum Computing and Simulation I (joint session Q/QI)
Q 51.6: Vortrag
Donnerstag, 13. März 2025, 12:15–12:30, AP-HS
Towards cavity-mediated entanglement within an atomic array — •Johannes Schabbauer1, Stephan Roschinski1, Franz von Silva-Tarouca1, and Julian Leonard1,2 — 1TU Wien, Atominstitut, Vienna Center for Quantum Science and Technology (VCQ), Stadionallee 2, 1020 Wien, Austria — 2Institute of Science and Technology Austria (ISTA), Am Campus 1, 3400 Klosterneuburg, Austria
Creating multi-particle entangled states deterministically is one of the big challenges for quantum information processing. While this was achieved locally in several systems, for instance with arrays of optical tweezers using Rydberg interactions between atoms, we set up an experiment to engineer non-local interactions between single atoms in optical tweezers by strong coupling to an optical cavity. In our experiment we reach the single-atom strong-coupling regime using a fiber cavity (C=80). Our cavity setup also enables good optical access for high resolution microscopes, which are used for trapping, site-resolved imaging and addressing of single atoms in optical tweezers. Our experiment enables us to study multi-particle entangled states and many-body systems with programmable interactions. The dispersive shift of the cavity resonance can be used to perform non-destructive measurements and to implement protocols for dissipative state preparation.
Keywords: Entanglement; Cavity QED; Tweezer; Cold Atoms