Superrevivals of Rydberg Wave Packets

Details Superrevivals of Rydberg Wave Packets Superrevivals of Rydberg Wave Packets

1995-08-29

arxiv.org/abs/quant-ph/9508026v1

Physics

Quantum Physics

to appear in the Proceedings of the Fourth Drexel Symposium on Quantum Nonintegrability

Scientific paper

The revival structure and evolution of Rydberg wave packets are studied on a time scale much greater than the revival time $t_{\rm rev}$. We find a new level of revival structure and periodic motion different from that of the known fractional revivals. The new sequence of revivals culminates with the formation of a wave packet that more closely resembles the initial packet than does the full revival at time $t_{\rm rev}$. We refer to such a revival as a superrevival. We also show that an initial radial wave packet may be described as a type of squeezed state known as a radial squeezed state. Our results apply not only for hydrogenic wave packets, but for wave packets in alkali-metal atoms as well in the context of quantum defect theory.

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