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.
Studies experimental quantum optics and atomic physics, including quantum light-matter interfaces, quantum memories, and single-photon sources based on atom-like emitters in solids, for applications in long-distance quantum communication and quantum networking.
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.
Patrick Ledingham's Hybrid Quantum Networks Lab develops light-matter interfaces for large-scale quantum photonic networks. Research: (1) warm and cold atomic ensemble quantum memories (ORCA protocol in warm Rb vapour) for telecom-wavelength photon storage; (2) atom-photon entanglement generation; (3) multiplexed quantum memories for repeater nodes. Key for quantum sensing via atom-photon entanglement and quantum repeater architectures.
Works in quantum optics and AMO physics: generation, characterization, and engineering of photonic quantum states, atomic and solid-state quantum memories, single-photon-level atomic/molecular spectroscopy, and optical magnetometry for quantum sensing; leads UIUC's public quantum network project.
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.