First experimental evidence for quantum echoes in scattering systems

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

First experimental evidence for quantum echoes in scattering systems

Authors

Description

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.
RevTex 4.0, 5 eps-figures