Tulio Brito Brasil focuses on multimode quantum optics, squeezed and entangled states of light, and their application for quantum sensing and communication. Research: (1) generation of two-colour high-purity EPR photonic states; (2) squeezed light for quantum noise reduction in measurement; (3) continuous variable quantum optics protocols for networks. Recently joined QUANTOP at NBI.
Cohadon and Heidmann co-lead the Optomechanics and Quantum Measurements group at LKB. Research directions: (1) Back-action evasion and Standard Quantum Limit (SQL) — early demonstration of radiation-pressure back-action in a micro-mirror (Nature 2006), subsequent beating of SQL via quantum correlations; (2) Micro/nanomechanical resonators — 2D photonic crystal deformable slabs, membrane-in-the-middle cavities, micropillar resonators for radiation-pressure optomechanics; (3) Superconducting qubit–macroscopic membrane coupling — Jacqmin & Deléglise team: resonant coupling of transmon qubit to MHz membrane oscillator, tracking quantum motion with 300 repeated interactions (2025); high-impedance hyperinductors for electromechanics; (4) Gravitational wave detector contributions — VIRGO/LIGO data analysis and quantum noise modeling. Applications include back-action-evading force sensing and tests of quantum mechanics at macroscopic scales.
Pierre-François Cohadon leads the optomechanics and quantum measurements group at LKB (ENS site). Research: (1) mechanical quantum systems and back-action-evading measurement; (2) gravitational wave detector enhancement — white-light cavity proposals to extend GW sensitivity; (3) quantum optomechanical sensing of forces and fields. The group was key to the LKB optomechanics tradition and is affiliated with Virgo/LIGO enhancement proposals.
PREFERRED. Evans leads work on frequency-dependent squeezed-light injection and low-thermal-noise optics that has pushed Advanced LIGO below the standard quantum limit across its full detection band, and he leads the US design effort for the next-generation Cosmic Explorer gravitational-wave observatory. This is squarely quantum-enhanced sensing at a fundamental-physics facility scale rather than a device-fabrication program.
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.
Grassellino directs the DOE's SQMS Center, a Fermilab-Northwestern-led national quantum initiative center, and pioneered nitrogen-doping surface treatments that give niobium superconducting RF (SRF) cavities record-high quality factors. Beyond their traditional use in particle accelerators, these ultra-high-Q cavities are now deployed as extremely sensitive electromagnetic detectors: the Dark SRF experiment set new sensitivity limits on dark-photon light-shining-through-wall searches, and SRF cavities (e.g. the MAGO design) are being explored as high-frequency gravitational-wave and axion detectors, alongside long-lived multimode quantum memories for superconducting quantum computing.
Lantz designs and characterizes the active seismic isolation and suspension control systems that let LIGO's kilometer-scale interferometers reach the sensitivities needed to detect gravitational waves, working on the classical-noise-suppression side of a fundamentally quantum-limited instrument.
PREFERRED. Mavalvala's research (now balanced against her role as Dean of the School of Science) centers on gravitational-wave detection and quantum measurement science, including the original squeezed-light and quantum-noise work at LIGO that she led together with Matthew Evans. Given her administrative role, active new postdoc hiring in her own group is uncertain and should be confirmed directly.
Eugene Polzik's QUANTOP centre uses hot and ultracold atomic spin ensembles and mechanical membranes to generate squeezed, entangled, and single-photon states for quantum sensing and communication. Key directions include: (1) atomic magnetometry and electromagnetic induction imaging for biomedical applications (MEG/MCG-quality sensors); (2) entanglement between a macroscopic mechanical oscillator and an atomic spin ensemble; (3) quantum memory for light; (4) back-action-evading measurement schemes beyond the SQL; and (5) optical preamplification for MRI. QUANTOP heads the Copenhagen Center for Biomedical Quantum Sensing (CBQS), targeting quantum-enhanced disease diagnostics.
Romanenko leads the Quantum Technology thrust at the SQMS Center, using ultra-high-coherence 3D niobium SRF cavities as both long-lived quantum memories for multimode superconducting quantum computing and as ultra-sensitive detectors for fundamental physics. He conceived and led the Dark SRF experiment, the first demonstration of SRF cavities used as light-shining-through-wall detectors, achieving new sensitivity limits for hidden-sector dark photons, and continues to explore SRF-based sensing of dark matter and gravitational waves.