Dembowski C, Dietz B, Friedrich T, Gräf H-D, Heine A, Mejía-Monasterio C, Miski-Oglu M, Richter A, Seligman T H
Institut für Kernphysik, Technische Universität Darmstadt, D-64289 Darmstadt, Germany.
Phys Rev Lett. 2004 Sep 24;93(13):134102. doi: 10.1103/PhysRevLett.93.134102. Epub 2004 Sep 23.
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 with the degree of development of a horseshoe describing the topology of the classical dynamics. The experiments confirm this picture and reveal the topological information.
在对一个开放的超导和一个正常导电的微波台球进行的实验中，观察到了一种被称为量子回声的自脉冲效应，其几何形状提供了软混沌，即具有一个大稳定岛的混合相空间图。对于此类系统，已预测到对入射脉冲的周期性响应。其周期与描述经典动力学拓扑结构的马蹄形的发展程度相关。实验证实了这一情况并揭示了拓扑信息。
