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.
Gruszka's Chromatin Dynamics Lab combines real-time single-molecule imaging with biochemistry and biophysics (including in Xenopus egg-extract systems) to study how epigenetic information carried by nucleosomes is disassembled and re-established during DNA replication. The lab is actively recruiting postdoctoral fellows.
Guellati-Khelifa leads LKB's atom-interferometric determination of the fine-structure constant via precision measurement of the atomic recoil velocity using Bloch oscillations in an optical lattice, one of the highest-precision atom-interferometry tests of fundamental physics worldwide.
Guerlin works on quantum-limited optomechanical measurement and quantum non-demolition detection schemes within LKB's optomechanics team, building on cavity-QED-style quantum-measurement concepts applied to mechanical degrees of freedom.
Gureyev is one of the originators of propagation-based X-ray phase-contrast imaging and the transport-of-intensity phase-retrieval methods that made it practical; his current work concerns the information-theoretic limits of imaging — how signal-to-noise, spatial resolution and radiation dose trade against one another — and the application of those limits to phase-contrast tomography, ptychography and electron microscopy, including biomedical imaging at clinically tolerable dose. 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 shared intellectual core is the noise-resolution-dose triangle: the same estimation-theory framework that sets the pT/sqrt(Hz) floor of an NV ensemble governs how many photons a phase-contrast image needs. Borderline inclusion (X-ray rather than quantum sensing), kept because the technique is explicitly about pushing resolution past conventional limits.
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.
Hadt's group designs molecular electron-spin qubits and elucidates the vibronic and structural origins of spin coherence, recently demonstrating all-optical initialization and readout of molecular spin coherence at room temperature - a route to chemically tunable molecular quantum sensors. For context, this complements the established paradigm of NV-diamond ensemble magnetometry (Hahn-echo/DEER, nanoscale NMR, T1 relaxometry) operating near pT/√Hz sensitivity.
Hadzibabic's group uses homogeneous, box-trapped ultracold atomic Bose gases as a highly controllable platform to study fundamental many-body physics far from equilibrium, including superfluidity, Berezinskii-Kosterlitz-Thouless physics, and quantum turbulence.
Haeffner's group traps and coherently controls individual and few-ion crystals to perform quantum logic spectroscopy, entanglement-enhanced metrology, and quantum simulation, using trapped ions as some of the most precisely controllable quantum sensors available. The lab is actively recruiting postdocs to work on next-generation ion-trap sensing and control techniques.