Kolthammer works on quantum photonics with an emphasis on nonclassical states of light and their applications to quantum information and sensing. Research highlights: (1) Gaussian Boson Sampling — first time-bin encoded GBS experiment using a loop-based interferometer with superconducting TES photon-number-resolving detectors, demonstrated enhancement in dense-subgraph search over classical methods (PRX 2022); (2) Squeezed state characterisation — nonclassicality certification using multiplexing layouts with superconducting TES detectors, sub-Poisson and sub-binomial statistics (PRA 2017); (3) Frequency-multiplexed photon pair sources — electro-optic frequency shifting for indistinguishable single-photon multiplexing without added multi-photon events; (4) Photonic quantum sensing — developing time-bin encoded platforms for quantum-enhanced sensing and quantum advantage demonstrations.

The Kovachy Group applies quantum wave properties of ultracold atoms to precision sensing. Primary focus: (1) Advanced large-momentum-transfer (LMT) atom interferometer pulse sequences using Bragg diffraction and Bloch oscillations to achieve record momentum splits of 100s of ℏk, enhancing sensitivity for fundamental physics tests; (2) MAGIS-100 collaboration — the 100 m-tall atom interferometer at Fermilab targeting gravitational waves in the mid-band complementary to LIGO/LISA, dark matter field searches, and tests of quantum mechanics at macroscopic scales; (3) Search for deviations from Newtonian gravity at micrometer range using atom-interferometric force sensing, and a new measurement of Newton's gravitational constant G; (4) Cryogenic optical cavity dark matter search (with Gabrielse and Geraci groups). David and Lucile Packard Fellow (2020), Paul Ehrenfest Best Paper Award 2020, NIST Precision Measurement Grant 2019. Member of CFP Northwestern and CIERA.

Krueger's chemistry group develops diamond and nanodiamond surface chemistry, functionalization and bioconjugation that make NV centres viable, shallow, coherent quantum sensors for chemical and biological targets - the materials-chemistry enabler for NV ensemble sensing. She co-leads Stuttgart's quantum-technologies profile. In the broader landscape of NV-centre ensemble quantum sensing (DEER, nano-NMR, T1 relaxometry) operating near pT/sqrt(Hz) sensitivity, this work is enabled at the surface-chemistry level by this work.

Kuhn leads the Atom-Photon Connection group, working at the single-atom, single-photon level. Key research thrusts: (1) deterministic generation of indistinguishable single photons from single atoms in high-finesse cavities, with cluster-state production for one-way quantum computing; (2) development of integrated fibre-tip microcavities with small radius-of-curvature for >50% photon capture efficiency and direct fibre coupling; (3) single-photon quantum memories using cavity-coupled atom systems; and (4) optical trapping of single atoms in the Lamb-Dicke regime for quantum simulation and networking. The group uses reinforcement learning for optimal quantum control of atom-cavity systems.

Prof. Kumar's group spans classical and quantum optics across three inter-related areas: (1) Quantum Fiber Optics — generation and distribution of entanglement (photon-pair, multi-photon) over fiber networks, quantum key distribution, and first-ever quantum teleportation over active internet-carrying fiber; (2) Nonlinear Quantum Optics — squeezed light and twin-beam (two-mode squeezed) state generation via fiber-based four-wave mixing and χ⁽²⁾ processes, with applications to sub-shot-noise interferometry, quantum-enhanced imaging, and quantum communication; (3) Photon-entanglement-enhanced precision measurement and optical communications. AT&T Professor of Information Technology; INQUIRE Executive Committee member.

Pioneer of experimental quantum optics with entangled and hyper-entangled photons; research spans quantum information processing, quantum communication, quantum-enhanced metrology and sensing, and fundamental tests of quantum mechanics using single- and entangled-photon sources.

Thierry Lahaye (CNRS DR, LCF/IOGS) co-leads the quantum optics atoms group with Browaeys and Ferrier-Barbut. Research: (1) Rydberg atom tweezer arrays for quantum simulation of many-body spin Hamiltonians; (2) dipole-dipole interaction physics with Rydberg atoms; (3) cryogenic tweezer arrays (2000-site rearrangement at 4K, PRApplied 2024). Key architect of Pasqal's quantum computing platform.

Anthony Laing's group pioneers photonic quantum computing and quantum simulation, having invented integrated quantum photonics. Research: (1) universal reconfigurable photonic quantum processors; (2) photonic quantum simulation for chemistry and materials science; (3) photonic quantum sensing using multi-photon interference on chip. Founded PsiQuantum co-founder and Quantum in the Summer school.

Lakhwani runs the Molecular Photophysics Group and is a chief investigator in ARC Exciton Science. The group works on strong light-matter coupling in organic semiconductors: forming exciton-polaritons in microcavities, driving them toward polariton lasing and condensation with electrically injected devices, and engineering host-guest energy funnelling to lower thresholds. A second thread is chiroptical spectroscopy — circular dichroism and circularly polarised luminescence of chiral organic films — which is a polarisation-resolved measurement of a very small differential signal. 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 — polaritonic quantum matter is a distinct route to non-classical states of light at room temperature, in contrast to the cryogenic or spin-based platforms that dominate pT/sqrt(Hz)-class sensing; the differential chiroptical measurements the group performs are, methodologically, small-signal detection problems of exactly the same type.

Arnaud Landragin (CNRS DR, SYRTE) is director of the cold-atom inertial sensors team and one of the world's leading experts in quantum gravimeters and gyroscopes. Research: (1) GIRAFE transportable cold-atom gravimeter for marine and airborne campaigns; (2) QAFCA project (PEPR Quantique) for gravity sensors for geoscience and navigation; (3) ESA ODIN ultra-high performance gyroscope for space. CNRS Innovation Medal 2020. Co-authored key reviews on cold-atom inertial sensors.