266 citations · 564 across the 6 of their papers we have counts for
6 papers
Spectral statistics in an open parametric billiard system
B. Dietz, A. Heine, A. Richter +2
We present experimental results on the eigenfrequency statistics of a superconducting, chaotic microwave billiard containing a rotatable obstacle. Deviations of the spectral fluctu…
First experimental evidence for quantum echoes in scattering systems
C. Dembowski, B. Dietz, T. Friedrich +6
A self-pulsing effect termed quantum echoes has been observed in experiments with an open superconducting and a normal conducting microwave billiard whose geometry provides soft ch…
Encircling an Exceptional Point
C. Dembowski, B. Dietz, H. -D. Graef +4
We calculate analytically the geometric phases that the eigenvectors of a parametric dissipative two-state system described by a complex symmetric Hamiltonian pick up when an excep…
Comment on ''Exceptional points and double poles of the S matrix''
C. Dembowski, B. Dietz, H. -D. Graef +4
In a recent paper [Phys. Rev. E 67, 026204 (2003)], Rotter calculates the geometric phases that are picked up by the eigenvectors of a two-state quantum system when an exceptional…
Observation of a Chiral State in a Microwave Cavity
C. Dembowski, B. Dietz, H. -D. Graef +4
A microwave experiment has been realized to measure the phase difference of the oscillating electric field at two points inside the cavity. The technique has been applied to a diss…
Phase shift experiments identifying Kramers doublets in a chaotic superconducting microwave billiard of threefold symmetry
C. Dembowski, B. Dietz, H. -D. Graef +5
The spectral properties of a two-dimensional microwave billiard showing threefold symmetry have been studied with a new experimental technique. This method is based on the behavior…