Multi-ion spectroscopy for optical clocks (B03)

• Subject Area: Optics, Quantum Optics and Physics of Atoms, Molecules and Plasmas
• Term: since 2016
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 274200144

This project aims to exploit multi-ion/multi-species systems for precision spectroscopy, optical clocks, and tests for new physics. In DQ-mat we have demonstrated optical clocks using few ion crystals, applying dynamical decoupling and entanglement, and provided the most stringent bounds on LLI. In the future, we will increase the number of ions and ensembles, utilize dynamical decoupling of designed entangled states to improve the statistical and systematic uncertainty well beyond that accessible with single ion clocks. These systems will allow us to further improve tests of LLI and to contribute to searches for dark matter and variation of fundamental constants through clock comparisons with other projects.

• DFG Programme: Collaborative Research Centres
• Subproject of: SFB 1227: Designed Quantum States of Matter (DQ-mat) - generation, manipulation, and detection for metrological applications and tests of fundamental physics
• Applicant Institution: Gottfried Wilhelm Leibniz Universität Hannover
• Project Heads: Dr. Elena Jordan, since 7/2024; Professorin Dr. Tanja E. Mehlstäubler; Professor Dr. Piet Oliver Schmidt