Laser control for the optimal evolution of pure quantum states

Details Laser control for the optimal evolution of pure quantum states Laser control for the optimal evolution of pure quantum states

2005-10-02

arxiv.org/abs/quant-ph/0510008v1

Phys. Rev. A 71, 063402 (2005)

Physics

Quantum Physics

16 pages, 9 figures

Scientific paper

10.1103/PhysRevA.71.063402

Starting from an initial pure quantum state, we present a strategy for reaching a target state corresponding to the extremum (maximum or minimum) of a given observable. We show that a sequence of pulses of moderate intensity, applied at times when the average of the observable reaches its local or global extremum, constitutes a strategy transferable to different control issues. Among them, post-pulse molecular alignment and orientation are presented as examples. The robustness of such strategies with respect to experimentally relevant parameters is also examined.

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