Quantum metrology with trapped (anti-)protons (B06)

• 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 develop novel laser-based quantum logic cooling and internal state readout techniques amenable to single (anti-)protons, with the ultimate application of a test of CPT invariance by comparing the g-factor of the proton and the antiproton. Current methods of direct detection, based on cryogenic cooling, are very successful but fight with the temperature of the particles and the extreme difficulty and slowness of the spin state detection. Sympathetic laser cooling can improve on both of these issues by two to three orders of magnitude each.

• 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. Juan Manuel Cornejo, since 7/2024; Professor Dr. Christian Ospelkaus