Vahala's group develops ultrahigh-Q optical microresonators and chip-scale soliton frequency microcombs for precision metrology, optical clocks, gyroscopes, LiDAR/ranging, and low-noise microwave generation, translating benchtop frequency-comb capability to integrated devices. For context, this complements the established paradigm of NV-diamond ensemble magnetometry (Hahn-echo/DEER, nanoscale NMR, T1 relaxometry) operating near pT/√Hz sensitivity.

Toeno van der Sar's group uses NV-centre diamond magnetometry to study correlated spin dynamics and electric currents in magnetic and 2D materials. Research directions: (1) scanning NV magnetometry of topological magnets, 2D magnetic materials (CrI3, Fe3GeTe2), and superconductors; (2) spin-wave (magnon) spectroscopy in magnetic thin films using NV sensors; (3) widefield NV imaging of biological samples and materials. The group develops both NV scanning probes and widefield NV ensembles for nanoscale spatial mapping of magnetic phenomena.

van Loock leads theoretical quantum optics and quantum information at Mainz, with a long-standing focus on continuous-variable quantum optics: squeezed and other nonclassical Gaussian states, non-Gaussian resources such as cat and GKP states, hybrid discrete/continuous-variable encodings, and the error-correction and repeater architectures built on them. The group also works on the fundamental limits of quantum-enhanced measurement and on how nonclassical light can be used as a metrological resource. He is theory-first, with output that directly serves the experimental quantum-optics and trapped-ion groups in Mainz. Relative to the established NV-ensemble quantum-sensing playbook (DEER, nanoscale NMR, T1 relaxometry at pT/sqrt(Hz) ensemble sensitivity), the relevance is on the fundamental-light-physics axis rather than the magnetometry axis: this is where the squeezing/nonclassical-state theory sits that would let a spin-ensemble sensor beat the standard quantum limit.

van Slageren's group is one of the leading molecular-qubit labs. They synthesize their own paramagnetic molecules, characterize them with a wide spectroscopic and magnetometric arsenal (multi-frequency and high-field EPR, pulsed EPR/DEER, THz spectroscopy, SQUID magnetometry) and back it with ab-initio calculation. Landmarks include room-temperature quantum coherence in a copper(II) molecular qubit, quantitative prediction of nuclear-spin-diffusion-limited coherence times, measurement of coherence in thin films without post-processing, and recent observation of a sizeable spin-electric effect -- electric-field control of a molecular spin state, which is the mechanism you would exploit for a molecular electrometer. Current direction: molecular quantum spintronics, marrying organic spintronics to molecular magnetism. Relative to the established NV-ensemble quantum-sensing playbook (DEER, nanoscale NMR, T1 relaxometry at pT/sqrt(Hz) ensemble sensitivity), this is the molecular alternative to the diamond defect: chemically tunable spin qubits whose coherence can be engineered by ligand design rather than by host-crystal purification. Immediate neighbours are Krueger (nanodiamond chemistry) and Wrachtrup (NV readout), both already on file -- an unusually complete local ecosystem.

Vanner leads the Quantum Measurement Lab, combining experiment and theory. Key research areas: (1) Cavity quantum optomechanics — developed a theoretical framework capturing nonlinear radiation-pressure beyond the linearised approximation, showing deterministic mechanical Wigner-negativity generation; demonstrated mechanical position-squared measurements in Nature Comms (2016); thermal noise squeezing by 36 dB (Nat. Comms 2013); (2) Brillouin-Mandelstam scattering — demonstrated strong coupling to high-frequency phonons (Optica 2019); single-phonon addition/subtraction via Brillouin (PRL 2021); quantum state tomography with non-Gaussianity; (3) Hybrid quantum systems — 'displacemon' architecture (nanobeam magnetically coupled to superconducting qubit, PRX 2018) for testing objective collapse and dark matter; (4) Quantum gravity tests — proposals for testing the generalised uncertainty principle (GUP) using optomechanical protocols. UKRI QTFP fellowship.

Varnavides leads the Curious Beams Lab, using scanning transmission electron microscopy, 4D-STEM/electron ptychography, and computational phase-retrieval to obtain atomic-resolution, three-dimensional maps of electrostatic and magnetic order (e.g., antiferromagnetic textures, charge/heat/spin transport) in quantum materials — a solid-state, electron-beam analogue to optical quantum-material imaging that similarly pushes spatial resolution past conventional limits. He joined TU Delft ImPhys as Assistant Professor in 2025 after a Miller Fellowship at UC Berkeley and is building out instrumentation for functional imaging of both materials and biological systems.

Verlot works on nano-optomechanics and quantum-limited displacement/force sensing with nanowire and levitated resonators, exploring ultrasensitive force detection and fundamental measurement limits. In the broader landscape of NV-centre ensemble quantum sensing (DEER, nano-NMR, T1 relaxometry) operating near pT/sqrt(Hz) sensitivity, this work is complemented by mechanical quantum sensors at the force-sensitivity frontier.

Builds radio and mm-wave quantum-limited sensing instruments for high-energy astrophysics and cosmology. Directions: (1) PUEO — balloon-borne radio Cherenkov (Askaryan) detector for ultra-high-energy cosmogenic neutrinos; (2) RNO-G — ground-based radio neutrino array at Summit Station, Greenland; (3) UHE cosmic ray radio detection methodology; (4) CMB instrumentation (BICEP/Keck, SPT, CMB-S4). 2025 APS Fellow; 2022 Moore EPII award. Director KICP.

Vijayan leads the Quantum Engineering Lab at Manchester's Photon Science Institute, focusing on levitated optomechanics. Key results: (1) Programmable cavity-mediated long-range interactions between two levitated nanoparticles via coherently scattered photons (Nature Physics 2024, ETH Zurich/Innsbruck collaboration before Manchester); (2) Ground-state cooling of nanospheres and building toward quantum superpositions; (3) Quantum sensing with levitated systems — ultra-sensitive force/acceleration detectors; dark matter searches with nanoparticle momentum transfer detection (QTFP-funded collaboration with Darren Price); (4) Multi-particle quantum arrays. Royal Society University Research Fellow. Currently advertising PhD positions in quantum sensing with levitated optomechanical systems. Collaborates with Novotny (ETH), Romero-Isart (Innsbruck), and Millen (King's College London).

Vuckovic's lab uses inverse-designed nanophotonic cavities and waveguides to couple diamond (NV/SiV) and other solid-state spin defects to light, building integrated quantum photonic devices for quantum sensing, networking, and single-photon sources.