Peter Lodahl's Quantum Photonics Group develops deterministic photon-emitter interfaces using semiconductor quantum dots embedded in photonic nanostructures (nanowires, photonic crystal waveguides). Research targets: single-photon sources with near-unity efficiency and indistinguishability; spin-photon interfaces for quantum repeaters; integrated quantum photonic circuits; and quantum networks based on single emitters. The group leads the Hy-Q Centre for Hybrid Quantum Networks and holds several quantum technology patents and spin-out companies. Borderline case — primarily quantum photonics for networking but with quantum sensing applications (single photon sensing, spin-photon).

Mahmoodian is a quantum-optics theorist working on waveguide QED and photon-photon interactions: how strongly-coupled emitters in a one-dimensional photonic channel generate non-classical photon-number correlations, and how those correlated multi-photon states can be exploited. His most sensing-relevant result is the demonstration that photon-number-correlated states produced by a single emitter can be used for quantum-enhanced metrology and absorption spectroscopy, beating the shot-noise limit with a source that requires no squeezing. He also works on the fundamental limits of quantum-enhanced measurement. 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 — his work belongs to the 'fundamental light physics' arm of the search rather than the spin arm, and it addresses the question directly downstream of pT/sqrt(Hz) ensembles: given a shot-noise-limited readout, what does non-classical light buy you? Theory PI, but tightly coupled to photonics experiments.

Malaney works on quantum communications with an emphasis on the satellite channel: continuous- and discrete-variable QKD through atmospheric turbulence, entanglement distribution from space, and the use of Gaussian and squeezed states as the carriers. A distinct thread is quantum-enhanced sensing and localisation — quantum illumination and quantum radar — where entangled probe states are used to detect weakly-reflecting targets in noisy backgrounds. 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 — his work belongs to the nonclassical-light arm of the search: it addresses whether squeezing and entanglement can be preserved through a lossy channel well enough to deliver a real metrological advantage, which is the practical question that determines whether quantum-enhanced sensing can ever beat a well-engineered shot-noise-limited pT/sqrt(Hz) device. Largely theory/simulation with some experimental collaboration.

Mintert's theoretical group works on quantum information and quantum control, including protocols to deterministically prepare highly non-classical (non-Gaussian, Wigner-negative) states of massive mechanical oscillators via optomechanical interactions, entanglement quantification, and quantum simulation.

Ruth Oulton's group works on quantum photonics using solid-state single-photon emitters. Research: (1) semiconductor quantum dot single-photon sources — cavity-enhanced emission, photonic crystal integration; (2) hBN defect spin-photon interfaces; (3) integrated quantum photonics for sensing and quantum networks. The group focuses on device-quality semiconductor photonic systems for quantum information and sensing applications.

Stefano Paesani works on photonic quantum information processing and quantum sensing. Research: (1) silicon quantum photonic integrated circuits for quantum computing and measurement; (2) boson sampling and quantum advantage with photons; (3) quantum sensing using photonic cluster states. Recently joined Lodahl group at NBI as associate professor.

Patel's research focuses on quantum photonics and quantum information, developing high-performance single-photon and entangled-photon sources and photonic circuits for quantum communication and computing applications.

Alberto Politi's Quantum nanoPhotonics Lab develops photonic quantum technology platforms for quantum information and sensing. Research: (1) integrated quantum photonic circuits in silicon, glass, and diamond; (2) quantum simulation with integrated photonics; (3) single-photon sources coupled to nanophotonic waveguides (including hBN defect emitters). Part of UK Quantum Technology Hubs.

John Rarity's group works on quantum-enhanced measurements and free-space quantum key distribution. Research: (1) quantum imaging with undetected photons — mid-infrared gas sensing (CO2, CH4) exploiting entangled photon pairs, with only near-IR photons detected (startup QLM); (2) sub-shot-noise imaging using quantum-identical photon beams; (3) spin-photon interfaces (1D cavity with near-unit scattering efficiency); (4) compact satellite QKD transmitters (EPSRC Quantum Comms Hub). Highly relevant to quantum-enhanced sensing.

Rudolph is a pioneer of measurement-based and fusion-based photonic quantum computing architectures; he co-founded PsiQuantum and continues to work on the theory of scalable linear-optical quantum computation and quantum foundations at Imperial.