Cassidy (formerly Microsoft/Sydney) builds hybrid superconductor-semiconductor quantum devices and the microwave measurement chains needed to read them out: dispersive gate sensing, superconducting resonators coupled to semiconductor nanostructures, and quantum-limited parametric amplification. The programme sits at the boundary between quantum computing hardware and quantum sensing — many of the same circuits used to read a qubit are, viewed differently, near-quantum-limited detectors of microwave photons or of charge. 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 — a superconducting-resonator readout chain with a quantum-limited amplifier is the leading route to inductively-detected spin resonance at sensitivities well below the pT/sqrt(Hz) regime accessible to optical NV ensembles, and Cassidy's group has the full stack of skills required. Mid-career, actively building; good autonomy for a postdoc.

Chaudhuri leads the Princeton Axion Search (PXS) and is a core contributor to the DMRadio program, using solenoidal lumped-element LC resonators, DC-SQUID and near-quantum-limited (traveling-wave parametric amplifier) readout to search for QCD axion dark matter from roughly neV to ueV masses; his group explicitly frames this as electromagnetic quantum sensing beyond the Standard Quantum Limit. He is actively developing superconducting resonators and RF quantum upconverters that push readout sensitivity toward and below the SQL.

Croot returned from Princeton to found Sydney's Superconducting Quantum Circuits Laboratory. The programme uses superconducting circuits both as quantum processors and as extremely sensitive probes: coupling microwave resonators and qubits to other degrees of freedom (mechanical modes, semiconductor structures, spins) to build hybrid systems, and developing the quantum-limited amplification chain that makes single-microwave-photon detection possible. 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 — superconducting circuits are the principal competitor technology for detecting the weak microwave signals that NV ensembles read magnetically; a quantum-limited or squeezed microwave amplifier is what lets an inductively-detected spin ensemble reach — and beat — the pT/sqrt(Hz) regime. Newly established, well-equipped lab; high autonomy for a postdoc and active recruitment as the lab builds out.

Pla is the strongest single match in this cohort for a candidate whose background is sensitivity-limited spin detection. His laboratory does inductively-detected electron spin resonance at millikelvin using high-quality-factor superconducting microresonators, read out through Josephson and travelling-wave parametric amplifiers operating at the quantum limit of added noise. The result is ESR sensitivity improved by many orders of magnitude over commercial spectrometers — the group's stated target is single-spin inductive detection — and, in parallel, the development of near-ideal degenerate parametric amplifiers and squeezed microwave states as the readout resource that makes it possible. Applications explicitly include chemistry and biology, where the goal is to do EPR on samples far too small for a conventional spectrometer. 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 microwave-inductive route to the same destination: where an NV ensemble reaches pT/sqrt(Hz) by optical readout of many spins, Pla reaches comparable or better spin sensitivity by making the microwave detection chain quantum-limited, and the DEER and dynamical-decoupling sequences are shared verbatim. Preferred attribute present in the strongest form: cutting-edge sensitivity, not device fabrication, is the object.

Tan leads the Superconducting Quantum Detectors group, holding ERC Starting and Consolidator Grants. Two main research pillars: (1) Quantum-limited SIS mixer development — pushing THz SIS heterodyne receivers above the Nb gap (~700 GHz) using NbTiN/NbN films for next-generation ALMA wideband sensitivity upgrade (Band 9) and large-format focal-plane mixer arrays for JCMT/SMA; (2) Superconducting parametric amplifiers (TWPAs) — fabricating kinetic-inductance and Josephson-junction TWPAs achieving near-quantum-limited broadband noise performance from microwave to THz, with applications to dark matter/axion searches (ABRACADABRA/prototype cavity haloscope), quantum computing qubit readout, and CMB-grade receivers. Group is transitioning TWPA fabrication in-house using Beecroft Building cleanroom. ERC Consolidator Grant awarded 2024.