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First experimental evidence for quantum echoes in scattering systems

C. Dembowski·B. Dietz·T. Friedrich·H. -D. Graef·A. Heine·C. Mejia-Monasterio·M. Miski-Oglu·A. Richter·T. H. Seligman
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Abstract

A self-pulsing effect termed quantum echoes has been observed in experiments with an open superconducting and a normal conducting microwave billiard whose geometry provides soft chaos, i.e. a mixed phase space portrait with a large stable island. For such systems a periodic response to an incoming pulse has been predicted. Its period has been associated to the degree of development of a horseshoe describing the topology of the classical dynamics. The experiments confirm this picture and reveal the topological information.

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C. Dembowski, B. Dietz, T. Friedrich, H. -D. Graef, A. Heine, C. Mejia-Monasterio, M. Miski-Oglu, A. Richter, T. H. Seligman. 2004-08-26. First experimental evidence for quantum echoes in scattering systems. https://doi.org/10.1103/physrevlett.93.134102

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