Johannes Feist

TL;DR: Ultrafast metrology reveals a 20-attosecond delay between photoemission from different electronic orbitals in neon atoms and theoretical models refined with the help of attosecond timing metrology may provide insight into electron correlations and allow the setting of the zero of time in atomic-scale chronoscopy with a precision of a few attose Cond.

TL;DR: A deterministic interface between a single trapped rubidium atom and a nanoscale photonic crystal cavity is demonstrated and Precise control over the atom's position allows us to probe the cavity near-field with a resolution below the diffraction limit and to observe large atom-photon coupling.

TL;DR: Polaritonic chemistry with organic molecules has been studied in this paper, where strong coupling and the associated formation of polaritons, hybrid light-matter excitations, lead to energy shifts in such systems that can amount to a large fraction of the uncoupled transition energy.

TL;DR: In this paper, the authors used custom-fabricated scanning probes with embedded thermocouples, in conjunction with new microdevices capable of periodic temperature modulation, to measure radiative heat transfer down to gaps as small as two nanometres.

TL;DR: Using a 1D model system, it is demonstrated that exciton conductance in organic materials can be enhanced by several orders of magnitude when the molecules are strongly coupled to an electromagnetic mode.