In a new paper with Max, Lukas and Günther, recently published in Nature Photonics, we explored how artificial intelligence can extract the maximum possible information from distorted optical signals. Using neural networks trained on seemingly chaotic light patterns, we approached — and nearly reached — the theoretical limit of precision, which we showed to be defined by the Cramér–Rao bound. Many thanks go to our collaborators in France (Dorian Bouchet) and Scotland (Ilya Starshynov and Daniele Faccio) as well as to Oliver for creating the great feature image shown on the top left. Check here for TU Wien’s press release.

Together with the group of Matthieu Davy in Rennes (France) we published a letter in the Physical Review, demonstrating how to optimally focus microwaves on a nonlinear target such as a low-noise amplifier embedded in a disordered environment (see image on the left).

Together with Elena Redchenko and the team of Johannes Fink at ISTA, we just published a Letter in the Physical Review (available through open access) on the observation of periodic microwave pulses being emitted from a multi-qubit ensemble arranged in a spectral frequency comb. Please also check the corresponding press release from TU Wien’s press department.

Together with David and Jakob, we published a new paper in Physical Review A, demonstrating that the Floquet scattering matrix for time-periodic photonic systems satisfies a pseudo-unitarity condition. For more information, check out the paper here.

In collaboration with Ori Katz’s team, we have shown in this Letter how to design an optical cavity such that a weakly absorbing film inside of it can perfectly absorb coherent laser light that is both spatially and spectrally broadband. Congratulations to Helmut and Lena for developing the theory behind this concept and many thanks to Oliver for the nice figure here on top!