Macroscopically delocalised quantum states of matter (B07)

• 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 will perform atom interferometery with macroscopic delocalization in space and time. With unprecedented sensitivities we will be able to perform concatenated interferometry with multiple ensembles and large-momentum transfer atom optics. Our experiments will yield bounds on decoherence mechanisms; by using source masses we will measure quantum phases originating from gravity coupling to quantum objects. We will closely collaborate with projects A05, B01, and B09 regarding methods for exceeding state-of-the-art in designing atomic quantum states as well as coherent momentum transfer. These targeted advances contribute to DQ-mat’s goal of enhancing quantum sensors and metrology for testing fundamental physics.

• 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: Professor Dr. Wolfgang Ertmer, until 6/2020; Professor Dr. Ernst Maria Rasel; Dr. Dennis Schlippert, since 7/2020