Ahmed develops cryogenic TES bolometer arrays and SQUID multiplexing readout for next-generation CMB polarization instruments (CMB-S4 and predecessors), working at the intersection of quantum-limited detector physics and observational cosmology.

Holzapfel develops and deploys cryogenic TES bolometer arrays with SQUID multiplexed readout for the South Pole Telescope and related cosmic microwave background experiments, pushing detector sensitivity toward the photon-noise limit for measurements of CMB anisotropy and polarization.

Irwin invented the transition-edge sensor (TES) and pioneered SQUID-multiplexed readout now used throughout CMB and dark-matter detector arrays; his group builds quantum-limited electromagnetic sensors for axion dark matter searches (DMRadio) and cryogenic calorimeters, pushing sensitivity to the standard quantum limit and beyond -- a field of quantum sensing that, like ensemble NV-diamond magnetometry reaching pT/√Hz sensitivities, trades off bandwidth and volume for extreme field sensitivity.

Kuo develops and deploys TES bolometer arrays and SQUID-multiplexed readout electronics for cosmic microwave background polarization experiments (BICEP/Keck, South Pole Telescope, CMB-S4), pairing quantum-limited cryogenic sensor design with cosmology to search for inflationary gravitational-wave signatures.

Lee designs and builds large-format TES bolometer arrays and their SQUID-multiplexed cryogenic readout electronics for the South Pole Telescope and CMB-S4, working to push per-detector noise toward the fundamental photon-noise limit for next-generation cosmic microwave background polarization surveys.

Pyle designs cryogenic athermal-phonon and TES-based quantum sensors for the SuperCDMS experiment, pushing detector thresholds down toward single-phonon / meV-scale energy resolution to search for sub-GeV dark matter. The group is actively recruiting postdocs.

Reichardt leads Melbourne's CMB effort and is a member of SPT-3G, the third-generation South Pole Telescope camera, whose focal plane is populated by ~16,000 transition-edge sensor bolometers read out by SQUID multiplexers. His science targets are CMB lensing, the Sunyaev-Zel'dovich effect and the small-scale temperature and polarisation power spectra; the enabling technology is cryogenic quantum-limited detection. 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 — this is the astronomical analogue of the same problem — a detector whose noise floor is set by fundamental quantum limits rather than by the source — and TES/SQUID readout is a natural pivot for a physicist trained on pT/sqrt(Hz) magnetometry, since SQUID amplification is the shared hardware. Preferred attribute present: astronomy where the quantum sensor is the enabling technology.