Investigation of the Wigner reaction matrix of microwave networks simulating quantum graphs with broken time reversal symmetry-one-port investigation

Abstract

We present new experimental studies of distributions of the Wigner reaction K matrix for open microwave networks. The one-port measurements were performed for the systems with broken time reversal symmetry in the regime of strong losses, where resonances are not resolved. Our studies are complementary to the previous two-port investigations. Fully connected six-vertex microwave networks were used to simulate quantum chaotic systems with broken time reversal symmetry. The usability of the distributions of the Wigner reaction K matrix as an effective tool for evaluation of losses in chaotic systems has been confirmed.