Jean-Baptiste Béguin's research at QUANTOP centers on optical nanofibre-trapped atom interfaces for quantum memories and quantum networks. Research: (1) nanofibre-trapped cold Cs atoms — quantum noise spectroscopy of atom-light spin coupling; (2) single-photon storage and retrieval from nanofibre-guided modes; (3) sub-Poissonian atom loading. Key direction in CBQS center for quantum sensing via coherent atom-photon interfaces.

Tulio Brito Brasil focuses on multimode quantum optics, squeezed and entangled states of light, and their application for quantum sensing and communication. Research: (1) generation of two-colour high-purity EPR photonic states; (2) squeezed light for quantum noise reduction in measurement; (3) continuous variable quantum optics protocols for networks. Recently joined QUANTOP at NBI.

Emil Zeuthen works on theoretical quantum optomechanics and quantum transduction. Research focuses on (1) figures of merit and protocols for quantum transducers (mechanical interfaces between microwave and optical domains); (2) back-action-evading measurements using optomechanical systems; (3) quantum limits for gravitational wave detection with mechanical systems in a negative-mass spin reference frame. Key QUANTOP theory collaborator bridging optomechanics and quantum sensing.