Aeppli leads the Quantum Technologies Group spanning ETH Zurich, EPFL, and PSI. Research directions: (1) Quantum materials imaging — using SLS synchrotron X-rays (including SwissFEL ultrafast pulses) and neutrons at SINQ to image quantum phase transitions, skyrmions, and correlated phases; non-destructive imaging of device structures; (2) Rare-earth quantum magnets and qubits — LiHoF4 as a model quantum system; Er, Pr, and Nd spin qubits in crystals for quantum information and sensing; (3) Semiconductor quantum devices — silicon and germanium nanostructures probed by synchrotron nanoscale X-ray imaging; (4) Van der Waals materials and CDW memory devices. Strong interface with PSI large-scale facilities as unique quantum sensing tools for materials.
Bakkali-Hassani works within LKB's BEC team on two-dimensional and low-dimensional quantum-gas physics, including superfluid phase transitions and collective excitations in ultracold Bose gases.
Bakr pioneered quantum gas microscopy, imaging individual atoms in Hubbard-regime optical lattices with single-site resolution to directly visualize charge, spin, and polaronic correlations in strongly correlated many-body systems, including recent work resolving itinerant spin polarons and the Nagaoka effect in triangular-lattice Hubbard systems. His single-particle/single-molecule-resolved imaging platforms are a borderline but relevant pivot into the quantum-sensing space via ultra-precise, quantum-limited detection of individual quantum particles; included here for review given the emphasis on cutting-edge spatial resolution rather than sensing per se.
Berengut works on the atomic structure theory underpinning next-generation clocks: highly charged ions, whose optical transitions are both extremely narrow and exceptionally sensitive to variation of fundamental constants and to new physics, and the thorium-229 nuclear clock. He identifies which ionic species and transitions maximise sensitivity to the physics of interest while remaining experimentally accessible, and computes the many-body structure needed to interpret them — work that has directly guided the experimental HCI clock programmes at PTB, MPIK and NIST. Positioned against the established body of NV-ensemble quantum sensing work — DEER, nanoscale NMR and T1 relaxometry protocols operating at pT/sqrt(Hz) field sensitivity — clocks and magnetometers are the two great classes of quantum sensor; his work is on the frequency side of the same estimation problem that fixes pT/sqrt(Hz) performance on the magnetic side. Theory PI with close experimental collaborations.
Beugnon is one of five permanent members of LKB's Bose-Einstein Condensates team (associated with Jean Dalibard's Atoms and Radiation chair at College de France), studying two-dimensional Bose gases, superfluidity, and box-trapped homogeneous quantum gases as precisely controllable quantum simulators.
The LKB atom interferometry group (also at SYRTE, Observatoire de Paris) develops cold atom inertial sensors including the world's best gyroscopes and gravimeters. Key research (Geiger, Landragin et al.): (1) interleaved cold atom gyroscope with 3.75 Hz sampling and 800ms interrogation (record sensitivity); (2) cold atom gradiometer for gravity gradient mapping; (3) atom chip-based compact sources for inertial navigation; (4) quantum optimal control for robust matter-wave sensing. QAFCA project (PEPR Quantique) on quantum sensors for geoscience and navigation. Note: The main PI is Remi Geiger (CNRS) / Arnaud Landragin, both at SYRTE/Observatoire de Paris (PSL), but LKB atom interferometry team is at ENS site.
Boudot has been a permanent CNRS researcher in the Time-Frequency department of FEMTO-ST since 2008, developing compact and miniaturized atomic clocks based on coherent population trapping (CPT) in cesium vapor microcells, including all-optical, cavity-free designs that remove the traditional microwave cavity to shrink clock volume toward chip scale for GNSS, telecom and potential deep-sea seismic-sensing deployment. He received the EFTF Young Scientist Award in 2020 for this work.
Brantut's lab studies quantum transport in ultracold Fermi gases, using them as quantum simulators for nanoscale solid-state devices. Research directions: (1) Mesoscopic quantum transport — fermionic cold atoms transported through quantum point contacts, studying conductance quantization, shot noise, and thermoelectric effects in atomic-scale channels; (2) Fermionic superfluidity in confined geometries — observing and probing pairing in constrictions; (3) Dissipation and open quantum systems — controlled introduction of loss to study non-Hermitian quantum physics; (4) Quantum thermometry in ultracold systems — using transport signatures as precision thermometers. Analogous to quantum Hall measurements and nanoelectronics in an ultra-clean platform.
Antoine Browaeys' group at LCF/IOGS is a world leader in neutral atom quantum simulation using optical tweezer arrays. Research: (1) Rydberg atom tweezer arrays for quantum simulation of strongly correlated many-body systems and quantum sensing; (2) dipole-dipole interactions in Rydberg ensembles; (3) co-founder and key researcher of Pasqal (neutral atom quantum computing company). The group works on scalable neutral atom platforms relevant to quantum sensors and quantum simulation. Open postdoc positions (2026).
Michel Brune leads the Rydberg atoms / cavity QED group at LKB. Research: (1) circular Rydberg atoms trapped in high-finesse microwave cavities — quantum non-demolition measurement of photons, quantum state engineering; (2) fundamental quantum optics: decoherence, entanglement, quantum jumps, Schrödinger cat states; (3) quantum sensing of cavity fields with single atoms as probes. This group pioneered cavity QED experiments leading to the 2012 Nobel Prize (Haroche). Brune heads the laboratory.