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.
Theorist developing frameworks for quantum sensing, control, and amplification in driven-dissipative quantum systems. Directions: (1) quantum noise theory for optomechanical and electromechanical sensors — fundamental limits and backaction evasion; (2) parametric amplification and squeezing beyond standard quantum limit; (3) non-reciprocal quantum systems for quantum-limited amplifiers; (4) quantum sensing theory for GW detectors and CMB experiments. 2020 Simons Investigator in Theoretical Physics.
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.
Fejer develops engineered nonlinear-optical materials (periodically poled crystals, low-mechanical-loss optical coatings) used to generate squeezed light and to reduce thermal noise in precision interferometers, contributing core technology to the squeezed-light upgrades deployed in Advanced LIGO.
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.
Xu works on frequency-dependent squeezed-light injection for quantum-enhanced gravitational-wave detection at LIGO and on trapped-cavity atom interferometry for precision tests of fundamental physics, bridging quantum optics and atom-based inertial sensing.