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.

Julien Laurat's quantum networks group develops atomic interfaces for long-distance quantum communication and sensing. Research: (1) cold atom quantum memory using DLCZ-protocol and EIT — multi-mode storage, entanglement generation; (2) nanofibre-trapped atom light interface for quantum networks; (3) quantum memory for telecom-band photons using rare-earth crystals. CNRS Silver Medal 2026. ERC Consolidator grant. Highly relevant to quantum sensing via atomic sensors and quantum network nodes.

Eugene Polzik's QUANTOP centre uses hot and ultracold atomic spin ensembles and mechanical membranes to generate squeezed, entangled, and single-photon states for quantum sensing and communication. Key directions include: (1) atomic magnetometry and electromagnetic induction imaging for biomedical applications (MEG/MCG-quality sensors); (2) entanglement between a macroscopic mechanical oscillator and an atomic spin ensemble; (3) quantum memory for light; (4) back-action-evading measurement schemes beyond the SQL; and (5) optical preamplification for MRI. QUANTOP heads the Copenhagen Center for Biomedical Quantum Sensing (CBQS), targeting quantum-enhanced disease diagnostics.

Urvoy develops cold-atom/optical-nanofiber quantum interfaces for atom-photon entanglement and quantum-memory applications, part of LKB's quantum-network research line alongside Julien Laurat and Hanna Le Jeannic.