Research Areas - (4) Warm Atomic Vapour Quantum Memory

Full path: Physics > Quantum Optics > Quantum Memory / Cold Atom Networks > Warm Atomic Vapour Quantum Memory

Jean-Baptiste Béguin 🔗
University of Copenhagen 🔗
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Department(s)/lab(s): Physics / Niels Bohr Institute | Copenhagen Center for Biomedical Quantum Sensing (CBQS) @ UCPH
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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 🔗
École Normale Supérieure 🔗
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Department(s)/lab(s): Physics / LKB | Quantum Networks Group (Laurat Lab) @ ENS Paris
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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 🔗
University of Southampton 🔗
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Department(s)/lab(s): Physics and Astronomy | Hybrid Quantum Networks Lab (Ledingham) @ Southampton
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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.

Eugene Polzik 🔗
University of Copenhagen 🔗
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Department(s)/lab(s): Physics / Niels Bohr Institute | QUANTOP – Quantum Optics Center (Polzik Lab) @ UCPH
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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.