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Phys. Rev. Lett. 94, 014102 (2005) [4 pages]

Universal Impedance Fluctuations in Wave Chaotic Systems

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Sameer Hemmady *, Xing Zheng †, Edward Ott *,†, Thomas M. Antonsen *,†, and Steven M. Anlage *,‡
Physics Department, University of Maryland, College Park, Maryland 20742-4111, USA

Received 26 December 2003; revised 7 May 2004; published 6 January 2005

We experimentally investigate theoretical predictions of universal impedance fluctuations in wave chaotic systems using a microwave analog of a quantum chaotic infinite square well potential. We emphasize the use of the radiation impedance to remove the nonuniversal effects of the particular coupling between the outside world and the scatterer. Specific predictions that we test include the probability density functions (PDFs) of the real and imaginary parts of the universal impedance, the equality of the variances of these PDFs, and the dependence of these PDFs on a single loss parameter.


©2005 The American Physical Society

URL: http://link.aps.org/doi/10.1103/PhysRevLett.94.014102
DOI: 10.1103/PhysRevLett.94.014102
PACS: 05.45.Mt, 05.45.Gg, 41.20.Jb, 84.40.Az

* Also with the Department of Electrical and Computer Engineering.
† Also with the Institute for Research in Electronics and Applied Physics.
‡ Also with the Center for Superconductivity Research.

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