Ivette Fuentes' group uses quantum information and metrology to probe fundamental physics at the interface of quantum theory and general relativity. Research: (1) quantum sensing of gravitational waves using relativistic quantum systems; (2) quantum clock synchronization and gravitational decoherence; (3) dark energy detection using quantum sensors; (4) quantum reference frames in curved spacetime. Bridges quantum sensing with gravitational physics.
Gabrielse directs Northwestern's Center for Fundamental Physics at Low Energy, where his group performs some of the most precise measurements of any single particle. Using a one-electron quantum cyclotron in a cylindrical Penning trap, his team measures the electron magnetic moment (g-factor) to sub-part-per-trillion precision, providing the most stringent test of quantum electrodynamics and the Standard Model. A parallel effort (ACME) searches for the electron's electric dipole moment using a cold beam of ThO molecules, and a new cavity-based dark-matter search and antihydrogen/antiproton precision-measurement program are underway. This is precision quantum sensing of fundamental constants rather than sensing of an external field, but it shares with NV-ensemble magnetometry the goal of pushing measurement sensitivity toward the quantum limit through improved back-action evasion.
Galbiati co-leads the DarkSide/Global Argon Dark Matter Collaboration program (DarkSide-20k and successors), developing ultra-radiopure underground argon and cryogenic noble-liquid time-projection chambers for direct WIMP dark-matter detection, building on his earlier work on the Borexino solar-neutrino scintillator experiment. Included as a borderline quantum-sensing entry on the strength of the ultra-low-background, single-quantum (photon/ionization) detection technology his group has developed, which is now being adapted for other applications such as total-body PET imaging.
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.
Develops computational methods (DFT + many-body perturbation theory, quantum embedding) to predict properties of spin defects for quantum sensing and computing. Directions: (1) first-principles prediction of coherence properties, zero-phonon lines, and spin-photon coupling for NV, SiC divacancy, Er, and other color center platforms; (2) high-throughput screening of novel spin defect candidates in 2D materials and oxides; (3) quantum embedding methods for strongly correlated defects. Director MICCoM; NAS member; Argonne senior scientist.
Gambardella leads the Magnetism and Interface Physics group at ETH D-MATL. Research directions: (1) Scanning probe magnetometry — using NV-center cantilevers (collaboration with Degen) and magneto-optical Kerr microscopy to image spin textures (skyrmions, domain walls) in thin-film heterostructures with sub-100 nm resolution; (2) Spin-orbit torques — current-induced magnetization switching via interfacial spin-orbit coupling; spin Hall and Rashba effects for spintronic devices; (3) Single-atom magnetism — STM and X-ray absorption for element-specific orbital and spin moments of individual atoms on surfaces; (4) XMCD at synchrotron — quantitative element-specific magnetic spectroscopy. Quantum sensing angle: spin-orbit driven phenomena, high-resolution magnetic imaging.
Gambin was the first EMBL Australia group leader appointed to Single Molecule Science. His signature method combines cell-free protein expression with two-colour single-molecule coincidence and fluctuation spectroscopy, which sidesteps purification entirely: proteins are expressed, labelled and measured in lysate, an order of magnitude faster than conventional interaction assays. The biology is protein self-association and aggregation — alpha-synuclein in Parkinson's, cardiac and muscular disease proteins — where the size distribution of oligomers, not the mean, is the quantity of interest. 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 conceptual overlap with quantum biosensing is the insistence on distributions over averages, and his aggregation systems (paramagnetic-species-generating, redox-active amyloid) are a plausible target for T1-relaxometry-based NV detection at pT/sqrt(Hz) in the near term.
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.
Jian-Rong Gao develops superconducting THz heterodyne detector arrays for radio astronomy and fundamental physics applications. Key work: (1) hot electron bolometer (HEB) and SIS mixer THz receivers operating at sub-mm and THz frequencies; (2) detector arrays for space and ground-based radio telescopes (Herschel, ALMA, and future missions); (3) low-noise amplification at THz frequencies. Joint professor TU Delft and SRON (Netherlands Institute for Space Research).
Garcia combines light-sheet and single-molecule fluorescence imaging with quantitative modeling to measure transcriptional dynamics in living Drosophila embryos in real time, quantifying how individual promoters and enhancers make fast, precise decisions during development. The group is actively recruiting postdocs interested in physical biology and quantitative live imaging.