Sapienza's Integrated Quantum Photonics group studies quantum optics on a chip, developing nanophotonic devices that integrate solid-state single-photon emitters (III-V quantum dots) with photonic crystal and plasmonic cavities, alongside investigations of quantum effects in biomolecules.
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).
Sayrin works on circular Rydberg-atom cavity QED at LKB, developing microwave-photon quantum-non-demolition detection and feedback-based quantum control protocols that build on the cavity-QED foundations pioneered by Haroche and Brune's team.
Stefan Schäffer leads the Quantum Metrology group at NBI together with Jörg Müller. Research focuses on superradiant strontium lasers: (1) quasi-continuous superradiant lasing with sub-natural linewidth; (2) Ramsey spectroscopy enhanced by cavity sub-to-superradiant phase transitions for improved atomic clock sensing; (3) continuous atom beam for Dicke-effect-free superradiant interrogation. Key work published in PRL (2023) and Nature Communications (2024). Part of EU iqClock and ESA collaborations.
Schleier-Smith's group uses optical-cavity-mediated interactions to entangle and spin-squeeze ensembles of trapped neutral atoms, generating metrologically useful entangled states for quantum-enhanced sensing, and is developing modular, networked atom-cavity systems as building blocks for distributed quantum sensor arrays and simulators.
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.
Quantenbit operates segmented micro-structured Paul traps for scalable trapped-ion quantum information and, increasingly, for quantum sensing. Directions: (i) trapped Rydberg ions -- combining the tight confinement of a Paul trap with the giant polarizability of Rydberg states, which is simultaneously a fast-gate resource and an extremely sensitive electric-field probe; (ii) motional-mode sensing of electric fields and surface noise; (iii) deterministic single-ion implantation, where a cold ion is extracted from the trap and implanted with nm-scale placement -- directly relevant to building NV/donor arrays with known ion counts, and to single-ion detection validation; (iv) TACTICa, applying ion-trapping and quantum-logic spectroscopy to 229Th toward a nuclear clock; (v) single-atom heat engines and quantum thermodynamics. Relative to the established NV-ensemble quantum-sensing playbook (DEER, nanoscale NMR, T1 relaxometry at pT/sqrt(Hz) ensemble sensitivity), the deterministic-implantation line is the natural upstream complement: it is the route to engineering NV ensembles/arrays with controlled density rather than relying on stochastic implantation. Strong local coupling to Budker (Th-229, exotic physics) and Wendt (laser ionization).
Schneider leads the Many-Body Quantum Dynamics group. His primary work is on optical lattice quantum simulation with ultracold atoms (quasicrystalline and kagome potentials, non-equilibrium dynamics), but he also co-leads a significant quantum sensing arm: he is a core Cambridge PI in the AION collaboration building a 10 m strontium single-photon atom interferometer at Oxford and contributing to MAGIS-100 at Fermilab, targeting mid-band gravitational wave detection and ultralight dark matter. In 2026 he co-leads the UKRI-funded SEQUIN project, a hybrid quantum-classical interferometer array combining atom interferometry with seismometers to probe gravitational waves and Earth's interior.
Schuessler combines optical frequency combs with cavity-enhanced and mid-IR spectroscopy for ultrasensitive trace-gas and isotopic detection, and runs ion-trap precision mass/laser spectroscopy of exotic species. In the broader landscape of NV-centre ensemble quantum sensing (DEER, nano-NMR, T1 relaxometry) operating near pT/sqrt(Hz) sensitivity, this work is a comb-metrology counterpart to spin-based chemical sensing.
A pioneer of circuit quantum electrodynamics, Schuster's group uses superconducting qubits and microwave resonators both as quantum-information platforms and as ultra-sensitive quantum-limited sensors/spectrometers, extending qubit-based readout to precision spectroscopy of otherwise inaccessible microwave-frequency phenomena.