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.

Tim Freegarde's Quantum Control group develops atom interferometric sensors and matter-wave optics. Research: (1) optimal Raman pulse design for cold atom inertial sensors — geometric approach to π-pulse optimisation and robust control; (2) matter-wave interferometric velocimetry of cold atom clouds; (3) point-source interferometry for real-time scale-factor calibration of cold atom gyroscopes; (4) large-area atom interferometry. Part of the UK Quantum Technology Hub in Sensors and Metrology. Director of the CDT in Quantum Technology Engineering.

Arnaud Landragin (CNRS DR, SYRTE) is director of the cold-atom inertial sensors team and one of the world's leading experts in quantum gravimeters and gyroscopes. Research: (1) GIRAFE transportable cold-atom gravimeter for marine and airborne campaigns; (2) QAFCA project (PEPR Quantique) for gravity sensors for geoscience and navigation; (3) ESA ODIN ultra-high performance gyroscope for space. CNRS Innovation Medal 2020. Co-authored key reviews on cold-atom inertial sensors.

Lim is an Advanced Research Fellow jointly responsible for the ultracold eEDM experiment at Imperial. He contributed to demonstrating sub-Doppler laser cooling of YbF to 100 μK (PRL 2018), the first demonstration of laser cooling of a heavy polar molecule to ultracold temperatures. He now leads development of the lattice eEDM experiment, developing techniques for loading laser-cooled YbF into a 3D optical lattice for precision eEDM measurements with coherence times far exceeding those of the beam experiment.

Sauer co-leads both YbF eEDM experiments at the Centre for Cold Matter together with Tarbutt and Lim. Key contributions: magnetometry for EDM measurement (design and characterisation of precision magnetic field systems for the ultracold eEDM experiment), precision spectroscopy of heavy polar molecules (YbF, lattice eEDM), and development of spin polarisation/analysis schemes. Co-PI on STFC grants for eEDM and magnetometry. Together the group aims to probe the eEDM at the 10^−30 e·cm level — several orders of magnitude improvement over existing measurements from ACME (Harvard/Yale).

Tarbutt co-leads the Imperial eEDM experiment using YbF molecules and runs an independent molecular array quantum computing/sensing programme. Two parallel eEDM experiments: (1) Ultracold YbF beam — 2D transverse laser cooling producing 200 μK, 2×10^5 molecules/shot, eEDM sensitivity of 1.8×10^−28 e·cm/day (near shot-noise limit); (2) YbF 3D optical lattice — aiming for 10^−30 e·cm/year, requires laser cooling to μK and loading into 3D optical lattice, using novel all-optical spin polarisation and analysis. Also leads UKRI project on testing fundamental physics using arrays of ultracold molecules (CaF in optical tweezers for two-qubit molecular gates). These experiments probe CP-violation and BSM physics at PeV energy scales through precision molecular spectroscopy.