Jacqueline Bloch leads a world-leading group on semiconductor exciton-polariton physics at C2N/Paris-Saclay. Research: (1) polariton condensation and quantum fluids of light — superfluidity, vortices, analogue gravity; (2) topological insulator physics with polaritons; (3) quantum simulation with polariton lattices; (4) fundamental quantum optics of polariton systems. IQUPS co-organiser; C2N head. Key for light-physics sensing relevant to quantum fluids and topological photonics.

Alex Clark's group works at the interface of quantum science and technology, focusing on: (1) quantum imaging with undetected photons (mid-IR sensing at 3.28 µm using CMOS cameras and entangled photons — QIUP technique); (2) single-molecule photon sources (molecules coupled to nanophotonic cavities); (3) quantum memory protocols (ORCA and ATS in atomic vapours for telecom-band photon storage); (4) integrated photonics for quantum sensing. Director of QET Labs; Work Package Leader in three UK Quantum Technology Hubs.

Galland leads LQNO at EPFL investigating light-matter interactions in nano-structures and the quantum regime. Research directions: (1) NV centers in diamond for quantum sensing — spectroscopy of NV spin states in ultra-thin diamond membranes, development of diamond nanophotonic platforms for enhanced sensing sensitivity; collaboration on quantum sensing with color centers; (2) Plasmonic nanocavities — few-nm gap junctions enhance Raman scattering by ×10^9, enabling single-molecule vibrational spectroscopy and coherent control; ultrafast and single-photon detection of coherent phonon dynamics; (3) 2D heterostructure photonics — entangled photon pair generation enhanced by TMD heterostructures; valley-polarized exciton sources; (4) Optical frequency conversion for quantum applications. SNSF-funded professor, internationally recognized for molecular optomechanics and carbon nanotube quantum optics.

Gangloff leads the Quantum Engineering Group at the Cavendish. Research spans three platforms: (1) Semiconductor quantum dots (InGaAs, GaAs) — demonstrating optical coherent control of quantum-dot nuclear spin ensembles (magnons, time crystals, many-body quantum registers); developing QD-based quantum repeater nodes (MEEDGARD QuantERA project); (2) Diamond group-IV spin defects (SiV, SnV, GeV) — precision positioning and high-purity single-photon generation from tin-vacancy centers; (3) Rydberg excitons in Cu₂O — exploring blockade-based optical quantum gates. The Integrated Quantum Networks Hub co-PI role underpins a broader quantum internet vision.

Philippe Grangier is a pioneer of quantum optics and quantum information at the Laboratoire Charles Fabry (IOGS/École Polytechnique). Research: (1) foundations of quantum mechanics: single photon experiments, Bell tests, quantum non-demolition measurement; (2) quantum optics and quantum information — continuous variables, entanglement generation, quantum cryptography; (3) Rydberg atom experiments (in collaboration with Browaeys). Coordinator of SIRTEQ network (700+ quantum researchers in Île-de-France). Closely connected to Pasqal spinoff. Key for quantum sensing foundations.

Kristin Grußmayer (Assistant Professor, BioNanoscience, 2021) develops super-resolution microscopy tools. Research: (1) SOFI (super-resolution optical fluctuation imaging) — camera-based super-resolution using photon statistics; (2) multi-plane super-resolution and quantitative phase imaging — combined modalities for 3D sub-diffraction imaging; (3) new fluorescence probe classes for SMLM; (4) AI-driven smart microscopy for automated phenotype detection. Marie Curie Fellow (EPFL, Lasser group). Group established 2021.

Edmund Harbord researches quantum communications, solid-state quantum optics, and topological photonic structures. Research: (1) single-photon sources based on solid-state emitters (quantum dots, colour centres); (2) topological photonic crystal structures for robust quantum light propagation; (3) quantum communication protocols. Bridges photonics engineering with quantum networking.

Imamoglu leads the Quantum Photonics Group at ETH, working at the intersection of quantum optics and condensed matter physics. Research directions: (1) Quantum emitters in 2D semiconductors — TMD monolayers (MoSe2, WSe2) host localized excitons that act as single-photon emitters; electrically tunable quantum dots in TMD heterostructures with high purity and spin-photon entanglement; developing them as quantum sensors of local electronic correlations at nanometer scales; (2) Strongly correlated electron physics — Mott insulator / Wigner crystal phases in moiré TMD bilayers probed optically with single-photon resolution; mapping electronic phases with nanometer spatial resolution; (3) Polariton quantum fluids — exciton-polaritons in 2D semiconductor microcavities; (4) Quantum nonlinear optics — photon-photon interactions via giant Kerr nonlinearities in strongly coupled quantum dots. Quantum sensing angle: quantum emitters as nanoscale probes of correlated phases.

Kolthammer works on quantum photonics with an emphasis on nonclassical states of light and their applications to quantum information and sensing. Research highlights: (1) Gaussian Boson Sampling — first time-bin encoded GBS experiment using a loop-based interferometer with superconducting TES photon-number-resolving detectors, demonstrated enhancement in dense-subgraph search over classical methods (PRX 2022); (2) Squeezed state characterisation — nonclassicality certification using multiplexing layouts with superconducting TES detectors, sub-Poisson and sub-binomial statistics (PRA 2017); (3) Frequency-multiplexed photon pair sources — electro-optic frequency shifting for indistinguishable single-photon multiplexing without added multi-photon events; (4) Photonic quantum sensing — developing time-bin encoded platforms for quantum-enhanced sensing and quantum advantage demonstrations.

Kuhn leads the Atom-Photon Connection group, working at the single-atom, single-photon level. Key research thrusts: (1) deterministic generation of indistinguishable single photons from single atoms in high-finesse cavities, with cluster-state production for one-way quantum computing; (2) development of integrated fibre-tip microcavities with small radius-of-curvature for >50% photon capture efficiency and direct fibre coupling; (3) single-photon quantum memories using cavity-coupled atom systems; and (4) optical trapping of single atoms in the Lamb-Dicke regime for quantum simulation and networking. The group uses reinforcement learning for optimal quantum control of atom-cavity systems.