Thomas Halfmann

Prof. Thomas Halfmann serves as Professor and Dean at Technical University of Darmstadt, leading the Nonlinear Optics and Quantum Optics (NLQ) research group within the Institute of Applied Physics. His work focuses on quantum optical phenomena in atomic and solid-state systems, with emphasis on light-matter interactions and quantum information applications.

His research centers on Quantum Optics and Nonlinear Optics, specializing in quantum memory implementation through electromagnetically induced transparency (EIT) and stimulated Raman adiabatic passage (STIRAP). Key investigations include spatial confinement of atomic excitations in doped solids, frequency conversion techniques for mid-infrared spectroscopy, and development of narrowband light sources using hollow-core fibers. Recent work demonstrates single-photon storage exceeding one-second duration and molecular detection via resonant nonlinear processes.

Analysis of his 2020-2025 publications reveals consistent innovation in quantum memory architectures using rare-earth-ion-doped crystals and fiber-based systems, alongside advancements in coherent control methodologies for atomic ensembles. His group maintains strong focus on practical quantum technologies, particularly narrowband photon sources for quantum communication and high-sensitivity molecular spectroscopy techniques leveraging resonant enhancement.

As head of the NLQ group, Halfmann oversees experimental research utilizing advanced laser systems for quantum optical investigations. His team employs doped solids, cold atomic ensembles, and hollow-core photonic structures to explore fundamental light-matter interactions with applications in quantum information processing.