Pierre-François Cohadon leads the optomechanics and quantum measurements group at LKB (ENS site). Research: (1) mechanical quantum systems and back-action-evading measurement; (2) gravitational wave detector enhancement — white-light cavity proposals to extend GW sensitivity; (3) quantum optomechanical sensing of forces and fields. The group was key to the LKB optomechanics tradition and is affiliated with Virgo/LIGO enhancement proposals.

Simon Groeblacher's lab probes quantum physics at meso- and macroscopic scales using mechanical motion, rare-earth ion emitters, and superconducting qubits. Key research directions: (1) quantum optomechanics with photonic crystal nano-beam resonators deep in the resolved-sideband regime; (2) silicon defect emitters (rare-earth doped silicon) for quantum network nodes; (3) quantum acoustics experiments coupling mechanical resonators to superconducting qubits. The lab fabricates all devices in-house at Kavli Nanolab and has received NWO Summit Grant for 'Quantum Limits' and QDNL/NWO grant for quantum network nodes.

Kippenberg leads the Laboratory of Photonics and Quantum Measurements (K-Lab) at EPFL, pioneer of chip-scale microresonator frequency combs and cavity optomechanics. Research directions: (1) Soliton microcombs — dissipative Kerr solitons in Si3N4 microresonators for massively parallel coherent optical communications, precision ranging/LiDAR (Science 2018, Nature 2017); dual-chirped microcomb parallel ranging at megapixel rates; (2) Room-temperature quantum optomechanics — phononic-crystal-patterned Si3N4 membrane-in-the-middle cavity reduces frequency noise 700×, observing quantum backaction at room temperature (Nature 2024); (3) Superconducting circuit optomechanics — topological lattices, electromechanical sensing (Nature 2022); (4) Free-electron–photon interactions in microresonators. Spin-off companies and strong industry ties. Over 85,000 citations, h-index ~80.

Bruce (Jun-Yu) Ou's group applies nanomechanics and nanophotonics to quantum sensor manipulation and AI hardware. Research: (1) ultracompact nanomechanical imaging optics for quantum sensor readout; (2) energy-efficient photonic AI hardware; (3) nanomechanical resonators for force sensing at the quantum limit; (4) nanophotonic interfaces to quantum sensors. Relevant to quantum sensor miniaturisation and readout.

Safavi-Naeini's group engineers nanoscale optomechanical and electromechanical devices -- phononic-crystal membranes and superconducting-circuit-coupled resonators -- for quantum-limited force and displacement sensing and for coherent microwave-to-optical quantum transduction linking superconducting qubits to photonic quantum networks.

Albert Schliesser's group engineers ultracoherent phononic crystal membrane resonators with dissipation-dilution Q>10^9 and uses them for quantum optomechanics: ground-state cooling, back-action-evading measurement, optical quantum memory for single photons, and microwave-optical quantum transduction. Recent work has demonstrated a soft-clamped topological phononic waveguide (Nature 2025) and scanning force microscopy below the standard quantum limit. The group bridges fundamental quantum physics with novel sensors for electromagnetic fields and forces, and mechanical interfaces for hybrid quantum networks.

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.