Summary: Elite French grande ecole, formerly ENS Cachan (renamed 2016) and relocated in 2020 to a new campus on the Saclay plateau in Gif-sur-Yvette; a founding member of Universite Paris-Saclay. Relevant for this search through two co-administered labs: LuMIn (Light, Matter and Interfaces, UMR 9024, jointly with Universite Paris-Saclay/CNRS/CentraleSupelec), spanning lasers and quantum optics (Bretenaker), atomic-vapour EIT and Rydberg RF sensing (Goldfarb), NV/nanodiamond bio-imaging and magnetometry (Treussart), carbon-nanotube/hBN quantum emitters (Lauret), nano-optomechanics (Verlot) and nanoplasmonics/thermoplasmonics (Palpant); and PPSM (Photophysics and Photochemistry, chemistry department) for single-molecule fluorescence, photochromism and advanced luminescent probes. Nearby C2N provides cleanroom access; the lab itself is not primarily a fabrication house.
Notes:
Warnings: Institution renamed from ENS Cachan; many collaborators hold joint CNRS / CentraleSupelec / Universite Paris-Saclay appointments, so lab affiliation can be ambiguous across the Saclay plateau.
Allain (PPSM) designs luminescent and mechanofluorochromic molecular materials and lanthanide/organic probes acting as optical stress and environment sensors, including solid-state and time-resolved luminescence readouts. In the broader landscape of NV-centre ensemble quantum sensing (DEER, nano-NMR, T1 relaxometry) operating near pT/sqrt(Hz) sensitivity, this work is complemented by stimuli-responsive molecular luminescent sensors.
Bretenaker (former LuMIn director) works on laser physics and quantum optics: sub-shot-noise sensing with phase-sensitive-amplifier-generated entangled beams, spin-noise spectroscopy in atomic vapours, EIT slow light, and quantum-limited passive resonant (fiber/bulk) gyroscopes with Thales. In the broader landscape of NV-centre ensemble quantum sensing (DEER, nano-NMR, T1 relaxometry) operating near pT/sqrt(Hz) sensitivity, this work represents the fundamental-light and quantum-limited-rotation-sensing side.
Goldfarb studies coherent effects in atomic vapours - EIT and slow light, spin-noise spectroscopy of spin-environment interaction, and EIT-based Rydberg-atom radio-frequency field sensing (electrometry) in warm cells. In the broader landscape of NV-centre ensemble quantum sensing (DEER, nano-NMR, T1 relaxometry) operating near pT/sqrt(Hz) sensitivity, this work adds atomic-vapour electrometry and coherence spectroscopy.
Lauret studies quantum light from low-dimensional materials - room-temperature single-photon emission from carbon nanotubes and defects in hexagonal boron nitride, coupled to photonic/plasmonic structures - a fundamental-photon and quantum-emitter platform. In the broader landscape of NV-centre ensemble quantum sensing (DEER, nano-NMR, T1 relaxometry) operating near pT/sqrt(Hz) sensitivity, this work provides solid-state single-photon sources adjacent to spin-defect sensing.
Ledoux-Rak works on molecular and polymer nonlinear optics - second-harmonic generation, electro-optic modulators, and photonic materials/devices - a fundamental-light and nonlinear-photonics program (legacy LPQM at ENS Cachan). In the broader landscape of NV-centre ensemble quantum sensing (DEER, nano-NMR, T1 relaxometry) operating near pT/sqrt(Hz) sensitivity, this work connects via nonlinear-optical materials for photon-pair generation and modulation.
Metivier (PPSM) studies photochromic and fluorescent molecules at the single-molecule level - photoswitching kinetics, energy transfer and orientation-resolved imaging - underpinning super-resolution (RESOLFT/STORM-type) probes and molecular sensors. In the broader landscape of NV-centre ensemble quantum sensing (DEER, nano-NMR, T1 relaxometry) operating near pT/sqrt(Hz) sensitivity, this work is paralleled by molecular photoswitches enabling optical super-resolution.
Palpant (current LuMIn director) studies ultrafast optical response and thermoplasmonics of metal nanoparticles - photothermal nanoscale heat sources and sensors for photonics and biomedicine. Primary appointment CentraleSupelec; based at the ENS Paris-Saclay LuMIn site. In the broader landscape of NV-centre ensemble quantum sensing (DEER, nano-NMR, T1 relaxometry) operating near pT/sqrt(Hz) sensitivity, this work is adjacent through plasmonic photothermal transduction and sensing.
Treussart uses fluorescent nanodiamonds (NV centres) as photostable bio-probes: intracellular single-particle tracking, nanoscale thermometry/magnetometry, and multimodal biosensing in cells and organisms, alongside super-resolution imaging - a direct NV-ensemble-to-biology bridge. In the broader landscape of NV-centre ensemble quantum sensing (DEER, nano-NMR, T1 relaxometry) operating near pT/sqrt(Hz) sensitivity, this work is applied here to living cells via nanodiamond probes.
Verlot works on nano-optomechanics and quantum-limited displacement/force sensing with nanowire and levitated resonators, exploring ultrasensitive force detection and fundamental measurement limits. In the broader landscape of NV-centre ensemble quantum sensing (DEER, nano-NMR, T1 relaxometry) operating near pT/sqrt(Hz) sensitivity, this work is complemented by mechanical quantum sensors at the force-sensitivity frontier.