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- Markus Allgaier, Stefan Gehler, Sonja Barkhofen, H-J Stöckmann, U Kuhl
- Physical review. E, Statistical, nonlinear, and…
- 2014

The influence of absorption on the spectra of microwave graphs has been studied experimentally. The microwave networks were made up of coaxial cables and T junctions. First, absorption was introduced… (More)

- Sonja Barkhofen, Thomas Nitsche, +4 authors C Silberhorn
- 2017

Sonja Barkhofen,1 Thomas Nitsche,1 Fabian Elster,1 Lennart Lorz,1 Aurél Gábris,2,3 Igor Jex,2 and Christine Silberhorn1 1Applied Physics, University of Paderborn, Warburger Strasse 100, 33098… (More)

- U Kuhl, Sonja Barkhofen, +4 authors Fabrice Mortessagne
- 2017

- Craig S. Hamilton, Regina Kruse, Linda Sansoni, Sonja Barkhofen, C Silberhorn, Igor Jex
- 2017 Conference on Lasers and Electro-Optics…
- 2017

We present the protocol for Gaussian Boson Sampling with single-mode squeezed states. We eliminate heralding and show that our proposal with the Hafnian matrix function can retain the higher photon… (More)

- Fabian Elster, Sonja Barkhofen, +4 authors C Silberhorn
- 2015 Conference on Lasers and Electro-Optics…
- 2015

We implement a quantum walk on a percolation graph leveraging a time-multiplexed quantum walk architecture to create broken links between the graph nodes. We test our system by verifying… (More)

- Sonja Barkhofen, J. J. Metzger, Roy Fleischmann, U. Kuhl, H-J Stöckmann
- Physical review letters
- 2013

Waves propagating through a weakly scattering random medium show a pronounced branching of the flow accompanied by the formation of freak waves, i.e., extremely intense waves. Theory predicts that… (More)

- A Potzuweit, Tainara Milbradt Weich, Sonja Barkhofen, U. Kuhl, H-J Stöckmann, M. Zworski
- Physical review. E, Statistical, nonlinear, and…
- 2012

We present microwave experiments on the symmetry reduced five-disk billiard studying the transition from a closed to an open system. The measured microwave reflection signal is analyzed by means of… (More)

- Sonja Barkhofen, Tainara Milbradt Weich, A Potzuweit, H-J Stöckmann, U. Kuhl, M. Zworski
- Physical review letters
- 2013

Symmetry reduced three-disk and five-disk systems are studied in a microwave setup. Using harmonic inversion the distribution of the imaginary parts of the resonances is determined. With increasing… (More)

- J. A. Franco-Villafañe, E Sadurní, Sonja Barkhofen, U. Kuhl, Fabrice Mortessagne, Thomas H. Seligman
- Physical review letters
- 2013

We present the first experimental microwave realization of the one-dimensional Dirac oscillator, a paradigm in exactly solvable relativistic systems. The experiment relies on a relation of the Dirac… (More)

Since the development of Boson sampling, there has been a quest to construct more efficient and experimentally feasible protocols to test the computational complexity of sampling from photonic… (More)