Murray develops mid-infrared photonic sources and detectors and combines mid-IR spectroscopy with mass-spectrometry imaging to provide complementary optical and biochemical maps of tissue for biomedical sensing.

Natrajan's group develops luminescent lanthanide complexes for chemical and biological sensing. Research directions: (1) Time-gated lanthanide luminescence sensing — long-lifetime Eu3+, Tb3+, and Yb3+ complexes with millisecond emission lifetimes for background-free sensing in cells and tissue; (2) Intracellular sensing — luminescent probes for sensing O2, pH, viscosity, and specific enzymes inside living cells with spatiotemporal resolution; (3) Chiral discrimination — circularly polarized luminescence (CPL) from Eu3+ complexes for enantioselective sensing; (4) Responsive probes — switchable lanthanide complexes as ratiometric sensors for biomedical imaging. The long-lifetime emission enables time-gating strategies analogous to quantum sensing protocols.

Needleman combines polarized-light microscopy, second-harmonic generation, single-molecule tracking, and fluorescence-lifetime (FLIM) metabolic imaging to study self-organization of the mitotic spindle and, in a clinically translated direction, non-invasive metabolic imaging of human oocytes and embryos for IVF viability assessment — an orientation- and lifetime-resolved imaging program with an active human-trial/clinical translation component.

Neil works on advanced optical microscopy techniques including structured-illumination and super-resolved (STED/SIM) imaging, and wavefront-based aberration correction, within Imperial's Photonics/Biophotonics group.

Nesbitt's group combines high-resolution laser spectroscopy, chemical physics and single-molecule fluorescence/FRET microscopy to probe molecular structure, dynamics, and biophysics at the single-molecule limit, spanning gas-phase reaction dynamics to nanoscale biomolecular conformational sensing. For context, this complements the established paradigm of NV-diamond ensemble magnetometry (Hahn-echo/DEER, nanoscale NMR, T1 relaxometry) operating near pT/√Hz sensitivity.

Nguyen's group at UCL (based at Royal Institution) focuses on magnetic and fluorescent nanoparticles for biomedical sensing and therapy. Research directions: (1) Magnetic nanoparticle synthesis — iron oxide (SPION) and other magnetic nanoparticles with controlled size, shape, and surface chemistry for MRI contrast and magnetic hyperthermia; (2) Biosensing platforms — functionalized nanoparticles as MRI-detectable sensors for specific biomolecular targets; magnetic particle imaging (MPI) for real-time tracking; (3) Plasmonic nanoparticles — gold nanoparticles for optical biosensing and photothermal therapy; (4) Fluorescent nanoparticles — QD- and dye-conjugated probes for live-cell imaging. Relevant to quantum sensing through magnetic nanoparticle platforms.

Pioneer of single-molecule/single-nanoparticle surface-enhanced Raman scattering (SERS) and quantum-dot bioconjugate imaging; develops nanoparticle probes for ultrasensitive molecular detection and in vivo tumor imaging.

Nussberger holds the biophysics chair at Stuttgart's Institute of Biomaterials and Biomolecular Systems. The group studies how proteins cross and insert into membranes -- mitochondrial protein translocases (TOM complex), apoptosis-related pore formation -- using single-channel electrophysiology, single-molecule fluorescence and structural methods, and has pushed this into an explicit nanopore/biosensing line: engineered protein and DNA-based pores as single-molecule sensors, including the DNA-origami nanosyringe for directed membrane translocation published with Na Liu's group. Relative to the established NV-ensemble quantum-sensing playbook (DEER, nanoscale NMR, T1 relaxometry at pT/sqrt(Hz) ensemble sensitivity), the relevance is the readout channel: nanopore sensing is the electrical single-molecule counterpart to optical single-molecule detection, and the group's membrane expertise is exactly what an in-cell quantum-sensing project needs when the question becomes how to get the probe across a bilayer.

O'Hare develops electrochemical and optical biosensors for point-of-care and near-patient diagnostics, including miRNA cancer biomarker detection and exhaled-breath-condensate analysis for respiratory and metabolic disease monitoring.

Olaya-Castro leads theoretical research on quantum phenomena in biological systems. Research directions: (1) Quantum coherence in photosynthesis — open quantum systems theory for energy transfer in light-harvesting complexes, probing whether quantum coherence provides functional advantage; vibronic coupling models for chromophore-protein complexes; (2) Counting statistics and noise in exciton and charge transfer; (3) Quantum thermodynamics of biomolecular machines — efficiency limits and entropy production in molecular motors; (4) Non-classical features of electronic/vibrational dynamics in chromophores; (5) Connections between quantum information measures and biological function. Collaborates with Bain and Llorente-Garcia on joint experiment/theory biosensing projects. Theoretical work only — no experimental activity.