First experimental evidence for chaos-assisted tunneling in a microwave annular billiard

We report on first experimental signatures for chaos-assisted tunneling in a two-dimensional annular billiard. Measurements of microwave spectra from a superconducting cavity with high frequency resolution are combined with electromagnetic field distributions experimentally determined from a normal...

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Bibliographic Details
Published in:Physical review letters 2000-01, Vol.84 (5), p.867-870
Main Authors: Dembowski, C, Graf, H, Heine, A, Hofferbert, R, Rehfeld, H, Richter, A
Format: Article
Language:English
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Summary:We report on first experimental signatures for chaos-assisted tunneling in a two-dimensional annular billiard. Measurements of microwave spectra from a superconducting cavity with high frequency resolution are combined with electromagnetic field distributions experimentally determined from a normal conducting twin cavity with high spatial resolution to resolve eigenmodes with properly identified quantum numbers. Distributions of quasidoublet splittings serve as basic observables for the tunneling between whispering gallery-type modes localized to congruent, but distinct tori which are coupled weakly to irregular eigenstates associated with the chaotic region in phase space.
ISSN:0031-9007
1079-7114
DOI:10.1103/physrevlett.84.867