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19972026
most citedDynamically encircling exceptional points in a waveguide: asymmetric mode switching from the breakdown of adiabaticity

1.1k citations

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24 papers · 1 filter

cond-mat.mes-hall2025

Dynamics of transport by helical edge states

Luis Alberto Razo López, Pierre Wulles, Geoffroy J. Aubry +2

Topologically nontrivial band structure of a material may give rise to special states that are confined to the material's boundary and protected against disorder and scattering. Qu…

cond-mat.mes-hall2023

Waiting time fluctuations in quasi-one-dimensional disordered conductors

Ferdinand Schulz, Mathias Albert

We consider sample to sample fluctuations of the waiting time between the detection of two consecutive electrons in quasi-one-dimensional disordered conductors at zero temperature.…

cond-mat.mes-hall2022★ 8 cited

Waiting time distributions in Quantum spin hall based heterostructures

F. Schulz, D. Chevallier, M. Albert

For the distinction of the Andreev bound states and Majorana bound states, we study the waiting time distributions (WTDs) for heterostructures, based on one dimensional edge states…

cond-mat.mes-hall2021★ 2 cited

Microwave studies of the three chiral ensembles in chains of coupled dielectric resonators

M. Richter, A. Rehemanjiang, U. Kuhl +1

Random matrix theory has proven very successful in the understanding of the spectra of chaotic systems. Depending on symmetry with respect to time reversal and the presence or abse…

cond-mat.mes-hall2021★ 10 cited

A spectral duality in graphs and microwave networks

Tobias Hofmann, Junjie Lu, Ulrich Kuhl +1

Quantum graphs and their experimental counterparts, microwave networks, are ideally suited to study the spectral statistics of chaotic systems. The graph spectrum is obtained from…

cond-mat.mes-hall2020★ 13 cited

Wavefront dislocations reveal the topology of quasi-1D photonic insulators

C. Dutreix, M. Bellec, P. Delplace +1

Phase singularities appear ubiquitously in wavefields, regardless of the wave equation. Such topological defects can lead to wavefront dislocations, as observed in a humongous numb…

cond-mat.mes-hall2020★ 53 cited

Observation of supersymmetric pseudo-Landau levels in strained microwave graphene

Matthieu Bellec, Charles Poli, Ulrich Kuhl +2

Using an array of coupled microwave resonators arranged in a deformed honeycomb lattice, we experimentally observe the formation of pseudo-Landau levels in the whole crossover from…

cond-mat.mes-hall2020★ 14 cited

Current vortices in aromatic carbon molecules

Thomas Stegmann, John A. Franco-Villafañe, Yenni P. Ortiz +6

The local current flow through three small aromatic carbon molecules, namely benzene, naphthalene and anthracene, is studied. Applying density functional theory and the non-equilib…

cond-mat.mes-hall2019★ 23 cited

A microwave realization of the chiral orthogonal, unitary, and symplectic ensembles

A. Rehemanjiang, M. Richter, U. Kuhl +1

Random matrix theory has proven very successful in the understanding of the spectra of chaotic systems. Depending on symmetry with respect to time reversal and the presence or abse…

cond-mat.mes-hall2017★ 21 cited

Fingerprints of Majorana fermions in current-correlations measurements from a superconducting tunnel microscope

Pierre Devillard, Denis Chevallier, Mathias Albert

We compute various current correlation functions of electrons flowing from a topological nanowire to the tip of a superconducting scanning tunnel microscope and identify fingerprin…

cond-mat.mes-hall2017★ 14 cited

Fluctuations in an established transmission in the presence of a complex environment

Dmitry V. Savin, Martin Richter, Ulrich Kuhl +2

In various situations where wave transport is preeminent, like in wireless communication, a strong established transmission is present in a complex scattering environment. We devel…

cond-mat.mes-hall2017★ 31 cited

Non-diffracting states in one-dimensional Floquet photonic topological insulators

Matthieu Bellec, Claire Michel, Haisu Zhang +2

One dimensional laser-written modulated photonic lattices are known to be particularly suitable for diffraction management purposes. Here, we address the connection between discret…

cond-mat.mes-hall2016★ 18 cited

Transport gap engineering by contact geometry in graphene nanoribbons: Experimental and theoretical studies on artificial materials

Thomas Stegmann, John A. Franco-Villafañe, Ulrich Kuhl +2

Electron transport in small graphene nanoribbons is studied by microwave emulation experiments and tight-binding calculations. In particular, it is investigated under which conditi…

cond-mat.mes-hall2015★ 26 cited

Lossy chaotic electromagnetic reverberation chambers: Universal statistical behavior of the vectorial field

J. -B. Gros, U. Kuhl, O. Legrand +1

The effective Hamiltonian formalism is extended to vectorial electromagnetic waves in order to describe statistical properties of the field in reverberation chambers. The latter ar…

cond-mat.mes-hall2015★ 31 cited

Experimental Observation of Resonance-Assisted Tunneling

Stefan Gehler, Steffen Löck, Susumu Shinohara +4

We present the first experimental observation of resonance-assisted tunneling, a wave phenomenon, where regular-to-chaotic tunneling is strongly enhanced by the presence of a class…

cond-mat.mes-hall2014★ 33 cited

Energy landscape in two-dimensional Penrose-tiled quasicrystal

Patrizia Vignolo, Matthieu Bellec, Julian Boehm +4

Since their spectacular experimental realisation in the early 80's, quasicrystals have been the subject of very active research, whose domains extend far beyond the scope of solid…

cond-mat.mes-hall2013★ 126 cited

Tight-binding couplings in microwave artificial graphene

Matthieu Bellec, Ulrich Kuhl, Gilles Montambaux +1

We experimentally study the propagation of microwaves in an artificial honeycomb lattice made of dielectric resonators. This evanescent propagation is well described by a tight-bin…

cond-mat.mes-hall2013★ 168 cited

First experimental realization of the Dirac oscillator

J. A. Franco-Villafañe, E. Sadurní, S. Barkhofen +3

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 rel…

cond-mat.mes-hall2013★ 33 cited

Subradiant hybrid states in the open 3D Anderson-Dicke model

A. Biella, F. Borgonovi, R. Kaiser +1

Anderson localization is a paradigmatic coherence effect in disordered systems, often analyzed in the absence of dissipation. Here we consider the case of coherent dissipation, occ…

cond-mat.mes-hall2012★ 49 cited

Experimental Observation of the Spectral Gap in Microwave n-Disk Systems

S. Barkhofen, T. Weich, A. Potzuweit +3

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…

cond-mat.mes-hall2012★ 188 cited

Topological transition of Dirac points in a microwave experiment

Matthieu Bellec, Ulrich Kuhl, Gilles Montambaux +1

By means of a microwave tight-binding analogue experiment of a graphene-like lattice, we observe a topological transition between a phase with a point-like band gap characteristic…

cond-mat.mes-hall2012★ 38 cited

Disordered graphene and boron nitride in a microwave tight-binding analog

S. Barkhofen, M. Bellec, U. Kuhl +1

Experiments on hexagonal graphene-like structures using microwave measuring techniques are presented. The lowest transverse-electric resonance of coupled dielectric disks sandwiche…

cond-mat.mes-hall2008★ 4 cited

Photonic Hall effect in cold atomic clouds

Benoît Grémaud, Dominique Delande, Olivier Sigwarth +1

On the basis of exact numerical simulations and analytical calculations, we describe qualitatively and quantitatively the interference processes at the origin of the photonic Hall…

cond-mat.mes-hall2000★ 60 cited

Field and intensity correlations in random media

P. Sebbah, R. Pnini, A. Z. Genack

Measurements of the microwave field transmitted through a random medium allows direct access to the field correlation function, whose complex square is the short range or C1 contri…