Experimental study of the distributions of off-diagonal scattering-matrix elements of quantum graphs with symplectic symmetry
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arXiv
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| Auteurs principaux: | , , , , |
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| Format: | Preprint |
| Publié: |
2025
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| _version_ | 1866909992810971136 |
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| author | Che, Jiongning Gluth, Nils Köhnes, Simon Guhr, Thomas Dietz, Barbara |
| author_facet | Che, Jiongning Gluth, Nils Köhnes, Simon Guhr, Thomas Dietz, Barbara |
| contents | We report on experimental studies of the distribution of the off-diagonal elements of the scattering matrix of open microwave networks with symplectic symmetry and a chaotic wave dynamics. These consist of two geometrically identical subgraphs with unitary symmetry described by complex conjugate Hamiltonians, that are coupled by a pair of bonds. The results are compared to random-matrix theory predictions obtained on the basis of the Heidelberg approach for the scattering matrix of open quantum-chaotic systems. We demonstrate that deviations from random-matrix theory predictions observed in the distributions may be attributed to the fact that the subgraphs are not fully connected. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2505_09573 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Experimental study of the distributions of off-diagonal scattering-matrix elements of quantum graphs with symplectic symmetry Che, Jiongning Gluth, Nils Köhnes, Simon Guhr, Thomas Dietz, Barbara Quantum Physics Statistical Mechanics Chaotic Dynamics We report on experimental studies of the distribution of the off-diagonal elements of the scattering matrix of open microwave networks with symplectic symmetry and a chaotic wave dynamics. These consist of two geometrically identical subgraphs with unitary symmetry described by complex conjugate Hamiltonians, that are coupled by a pair of bonds. The results are compared to random-matrix theory predictions obtained on the basis of the Heidelberg approach for the scattering matrix of open quantum-chaotic systems. We demonstrate that deviations from random-matrix theory predictions observed in the distributions may be attributed to the fact that the subgraphs are not fully connected. |
| title | Experimental study of the distributions of off-diagonal scattering-matrix elements of quantum graphs with symplectic symmetry |
| topic | Quantum Physics Statistical Mechanics Chaotic Dynamics |
| url | https://arxiv.org/abs/2505.09573 |