title: Microwave Realization of the Gaussian Symplectic Ensemble.
abstract: Following an idea by Joyner et al. [Europhys. Lett. 107, 50004 (2014)], a microwave graph with an antiunitary symmetry T obeying T^{2}=-1 is realized. The Kramers doublets expected for such systems are clearly identified and can be lifted by a perturbation which breaks the antiunitary symmetry. The observed spectral level spacings distribution of the Kramers doublets is in agreement with the predictions from the Gaussian symplectic ensemble expected for chaotic systems with such a symmetry.
authors.affiliation: Fachbereich Physik der Philipps-Universität Marburg, D-35032 Marburg, Germany.
authors.forename: A
authors.initials: A
authors.lastname: Rehemanjiang
authors.affiliation: Fachbereich Physik der Philipps-Universität Marburg, D-35032 Marburg, Germany.|Integrated Quantum Optics, Applied Physics, University of Paderborn, 33098 Paderborn, Germany.
authors.forename: M
authors.initials: M
authors.lastname: Allgaier
authors.affiliation: School of Mathematical Sciences, Queen Mary University of London, London E1 4NS, United Kingdom.
authors.forename: C H
authors.initials: CH
authors.lastname: Joyner
authors.affiliation: School of Mathematics, University of Bristol, Bristol BS8 1TW, United Kingdom.
authors.forename: S
authors.initials: S
authors.lastname: Müller
authors.affiliation: School of Mathematics, University of Bristol, Bristol BS8 1TW, United Kingdom.
authors.forename: M
authors.initials: M
authors.lastname: Sieber
authors.affiliation: Fachbereich Physik der Philipps-Universität Marburg, D-35032 Marburg, Germany.|Université de Nice-Sophia Antipolis, Laboratoire de la Physique de la Matière Condensée, CNRS, Parc Valrose, 06108 Nice, France.
authors.forename: U
authors.initials: U
authors.lastname: Kuhl
authors.affiliation: Fachbereich Physik der Philipps-Universität Marburg, D-35032 Marburg, Germany.
authors.forename: H-J
authors.initials: HJ
authors.lastname: Stöckmann