Tags - (3) THz semiconductor spectroscopy

Department(s)/lab(s): Imaging Physics (ImPhys) | Adam Lab (THz near-field) @ TU Delft
Summary:

Aurèle Adam develops THz near-field imaging and spectroscopy. Research: (1) apertureless scattering-type near-field optical microscopy (s-SNOM) at THz frequencies for nanometre spatial resolution imaging of material properties; (2) THz time-domain spectroscopy of quantum materials and condensed matter systems; (3) antenna-coupled detectors and sources for THz near-field imaging. Relevant to quantum material characterisation at the nanoscale.

Department(s)/lab(s): Physics & Astronomy – Photon Science Institute | Hibberd Group (THz Spectroscopy and Quantum Materials) @ Manchester
Summary:

Hibberd holds an EPSRC Ernest Rutherford Fellowship at Manchester's PSI. Research directions: (1) Ultrafast THz spectroscopy of magnetic materials β€” probing spin dynamics, magnon modes, and phase transitions in correlated magnetic materials with sub-ps time resolution using intense THz pulses; (2) THz-driven spintronics β€” using THz electric and magnetic fields to switch magnetization and induce spin currents; (3) THz generation from spintronic heterostructures β€” using ultrafast spin-charge conversion as a broadband THz emitter for materials characterization; (4) Quantum magnonics β€” studying collective spin excitations (magnons) as quantum sensors of materials order parameters. Bridges ultrafast optics and quantum sensing of magnetic phases.

Department(s)/lab(s): School of Physics | Nanophotonics and Electromagnetic Materials Group @ USyd
Summary:

Kuhlmey works on structured electromagnetic materials across an unusually wide frequency range: microstructured optical fibres, metamaterials, non-reciprocal and time-varying media, and β€” the newest and most sensing-relevant thread β€” quantum terahertz photonics, in collaboration with ENS Paris and CSIRO. The THz programme is explicitly aimed at single-photon/single-electron coupling in the THz band, which if it works would allow quantum devices to operate at a few kelvin rather than millikelvin. The group runs a THz time-domain spectroscopy lab with cryogenic capability. Positioned against the established body of NV-ensemble quantum sensing work β€” DEER, nanoscale NMR and T1 relaxometry protocols operating at pT/sqrt(Hz) field sensitivity β€” the THz band is the one part of the spectrum where neither superconducting circuits nor NV ensembles currently offer quantum-limited detection, so this is a genuine gap-filling programme rather than a variation on existing pT/sqrt(Hz) approaches.