87 citations · 320 across the 16 of their papers we have counts for
16 papers
Statistical analysis of level spacing ratios in pseudo-integrable systems: semi-Poisson insight and beyond
Afshin Akhshani, Małgorzata Białous, Leszek Sirko
We studied the statistical properties of a quantum system in the pseudo-integrable regime through the gap ratios between consecutive energy levels of the scattering spectra. A two-…
Coupled unidirectional chaotic microwave graphs
Omer Farooq, Afshin Akhshani, Michał Ławniczak +2
We investigate experimentally the undirected open microwave network with internal absorption composed of two coupled directed halves, unidirectional networks and $Γ_{-…
Quantum graphs and microwave networks as narrow band filters for quantum and microwave devices
Afshin Akhshani, Małgorzata Białous, Leszek Sirko
We investigate properties of the transmission amplitude of quantum graphs and microwave networks composed of regular polygons such as triangles and squares. We show that for the gr…
Investigation of the enhancement factor in the regime of semi-Poisson statistics in a singular microwave cavity
Małgorzata Białous, Leszek Sirko
We investigated properties of a singular billiard, that is, a quantum billiard which contains a pointlike (zero-range) perturbation. A singular billiard was simulated experimentall…
Distributions of the Wigner reaction matrix for microwave networks with symplectic symmetry in the presence of absorption
Michal Lawniczak, Afshin Akhshani, Omer Farooq +4
We report on experimental studies of the distribution of the reflection coefficients, and the imaginary and real parts of Wigner's reaction (K) matrix employing open microwave netw…
Application of topological resonances in experimental investigation of a Fermi golden rule in microwave networks
Michał Ławniczak, Jiří Lipovský, Małgorzata Białous +1
We investigate experimentally a Fermi golden rule in two-edge and five-edge microwave networks with preserved time reversal invariance. A Fermi golden rule gives rates of decay of…
Missing level statistics in a dissipative microwave resonator with partially violated time-reversal invariance
Malgorzata Bialous, Barbara Dietz, Leszek Sirko
We report on the experimental investigation of the fluctuation properties in the resonance frequency spectra of a flat resonator simulating a dissipative quantum billiard subject t…
The edge switch transformation in microwave networks
Vitalii Yunko, Małgorzata Białous, Leszek Sirko
We investigated the spectra of resonances of four-vertex microwave networks simulating both quantum graphs with preserved and with partially violated time-reversal invariance befor…
How T-invariance violation leads to an enhanced backscattering with increasing openness of a wave-chaotic system
Malgorzata Bialous, Barbara Dietz, Leszek Sirko
We report on the experimental investigation of the dependence of the elastic enhancement, i.e., enhancement of scattering in backward direction over scattering in other directions…
Hearing Euler characteristic of graphs
Michał Ławniczak, Pavel Kurasov, Szymon Bauch +3
The Euler characteristic and the total length are the most important topological and geometrical characteristics of a metric graph. Here, and …
Missing level statistics and the power spectrum of level fluctuations analysis of three-dimensional chaotic microwave cavities
Michał Ławniczak, Małgorzata Białous, Vitalii Yunko +2
We present an experimental study of missing level statistics of three-dimensional chaotic microwave cavities. The investigation is reinforced by the power spectrum of level fluctua…
Experimental and numerical study of spectral properties of three-dimensional chaotic microwave cavities: The case of missing levels
Vitalii Yunko, Małgorzata Białous, Szymon Bauch +2
We present an experimental and numerical study of missing-level statistics of chaotic three-dimensional microwave cavities. The nearest-neighbor spacing distribution, the spectral…
Non-universality in the spectral properties of time-reversal invariant microwave networks and quantum graphs
Barbara Dietz, Vitalii Yunko, Malgorzata Bialous +3
We present experimental and numerical results for the long-range fluctuation properties in the spectra of quantum graphs with chaotic classical dynamics and preserved time-reversal…
Long-range correlations in rectangular cavities containing point-like perturbations
Malgorzata Bialous, Vitalii Yunko, Szymon Bauch +3
We investigated experimentally the short- and long-range correlations in the fluctuations of the resonance frequencies of flat, rectangular microwave cavities that contained antenn…
Power spectrum analysis and missing level statistics of microwave graphs with violated time reversal invariance
Malgorzata Bialous, Vitalii Yunko, Szymon Bauch +3
We present experimental studies of the power spectrum and other fluctuation properties in the spectra of microwave networks simulating chaotic quantum graphs with violated time rev…
Experimental investigation of the elastic enhancement factor in a transient region between regular and chaotic dynamics
Michał Ławniczak, Małgorzata Białous, Vitalii Yunko +2
We present the results of an experimental study of the elastic enhancement factor W for a microwave rectangular cavity simulating a two-dimensional quantum billiard in a transient…