Control of Wave Packet Revivals Using Geometric Phases

Details Control of Wave Packet Revivals Using Geometric Phases Control of Wave Packet Revivals Using Geometric Phases

1999-10-25

arxiv.org/abs/quant-ph/9910101v1

Physics

Quantum Physics

11 pages

Scientific paper

Wave packets in a system governed by a Hamiltonian with a generic nonlinear spectrum typically exhibit both full and fractional revivals. It is shown that the latter can be eliminated by inducing suitable geometric phases in the states, by varying the parameters in the Hamiltonian cyclically with a period T. Further, with the introduction of this natural time step T, the occurrence of near revivals can be mapped onto that of Poincar\'{e} recurrences in an irrational rotation map of the circle. The distinctive recurrence time statistics of the latter can thus serve as a clear signature of the dynamics of wave packet revivals.

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