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.
Grassellino directs the DOE's SQMS Center, a Fermilab-Northwestern-led national quantum initiative center, and pioneered nitrogen-doping surface treatments that give niobium superconducting RF (SRF) cavities record-high quality factors. Beyond their traditional use in particle accelerators, these ultra-high-Q cavities are now deployed as extremely sensitive electromagnetic detectors: the Dark SRF experiment set new sensitivity limits on dark-photon light-shining-through-wall searches, and SRF cavities (e.g. the MAGO design) are being explored as high-frequency gravitational-wave and axion detectors, alongside long-lived multimode quantum memories for superconducting quantum computing.
Gratta's group works at the interface of atomic and particle physics, developing cold-atom interferometric gravimeters and gradiometers for tests of gravity alongside searches for neutrinoless double-beta decay using liquid-xenon TPCs (EXO-200/nEXO), spanning quantum sensing hardware and rare-event particle detection.
Simon Groeblacher's lab probes quantum physics at meso- and macroscopic scales using mechanical motion, rare-earth ion emitters, and superconducting qubits. Key research directions: (1) quantum optomechanics with photonic crystal nano-beam resonators deep in the resolved-sideband regime; (2) silicon defect emitters (rare-earth doped silicon) for quantum network nodes; (3) quantum acoustics experiments coupling mechanical resonators to superconducting qubits. The lab fabricates all devices in-house at Kavli Nanolab and has received NWO Summit Grant for 'Quantum Limits' and QDNL/NWO grant for quantum network nodes.
Gruetter leads the Laboratory for Functional and Metabolic Imaging (LFMI) at EPFL and co-directs the CIBM (Centre for Biomedical Imaging). Research directions: (1) Ultra-high-field in vivo MR spectroscopy — developing 1H, 13C, 31P, 23Na MRS at 14.1T animal and 7T human systems to measure metabolite concentrations (glutamate, GABA, lactate) in brain with unprecedented sensitivity; (2) Quantum coherence effects in NMR — exploiting J-coupling evolution and JPRESS sequences for quantum-selective metabolite editing; (3) Hyperpolarization — DNP-enhanced metabolite sensing in vivo for tracking metabolic flux in real time; (4) Neuroimaging — quantitative BOLD fMRI calibration and cerebral blood flow mapping. The 14.1T magnet is among the world's most powerful for biological NMR spectroscopy.
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.
Develops colloidal semiconductor nanocrystal platforms for infrared detection and sensing. Directions: (1) HgTe and HgSe colloidal quantum dot mid-IR photodetectors operating at room temperature — record sensitivity for solution-processed IR sensors; (2) electro-optic modulation using nanocrystal films at ultrafast timescales; (3) fundamental optical and transport properties of doped nanocrystals. Primary application: low-cost infrared imaging and chemical sensing.
Ham's group builds CMOS integrated-circuit platforms spanning scalable, chip-based NMR spectrometers (including impedance-tuned microwave loops for controlling dense NV-diamond spin ensembles, developed with Ronald Walsworth) and CMOS intracellular microelectrode arrays that record from thousands of neurons in parallel — a dual quantum-sensing/bioelectronic-sensing program built around scaling sensitive spin- and electrode-based sensors onto integrated circuits.
Studies surface and interface chemistry of diamond and other materials, including the chemical functionalization and stabilization of near-surface NV and silicon-vacancy color centers used in diamond-based quantum sensors, in collaboration with the Choy group.
Hamilton heads the Quantum Electronic Devices group and is Deputy Director of the ARC Centre for Future Low Energy Electronics (FLEET). The group works on hole-based quantum devices in GaAs and germanium, where strong spin-orbit coupling allows all-electrical spin control, and on topological materials and one-dimensional transport. The measurements are millikelvin transport and noise spectroscopy of very small signals in mesoscopic devices. Positioned against the established body of NV-ensemble quantum sensing work — DEER, nanoscale NMR and T1 relaxometry protocols operating at pT/sqrt(Hz) field sensitivity — the link is indirect — this is charge/spin transport rather than magnetometry — but the group's expertise in low-noise cryogenic measurement and in spin-orbit-mediated electrical spin control is directly transferable to electrically-detected spin sensing, which is the main alternative to the optical readout that limits pT/sqrt(Hz) NV ensembles. Borderline inclusion; kept under the inclusive rubric.