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Article Dans Une Revue Physical Review A : Atomic, molecular, and optical physics [1990-2015] Année : 2005

Control of mixed-state quantum systems by a train of short pulses

Résumé

A density matrix approach is developed for the control of a mixed-state quantum system using a time-dependent external field such as a train of pulses. This leads to the definition of a target density matrix constructed in a reduced Hilbert space as a specific combination of the eigenvectors of a given observable through weighting factors related to the initial statistics of the system. A train of pulses is considered as a possible strategy to reach this target. An illustration is given by considering the laser control of molecular alignment and orientation in thermal equilibrium.

Dates et versions

hal-00508365 , version 1 (03-08-2010)

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Dominique Sugny, Arne Keller, Osman Atabek, D. Daems, C. M. Dion, et al.. Control of mixed-state quantum systems by a train of short pulses. Physical Review A : Atomic, molecular, and optical physics [1990-2015], 2005, 72, pp.032704. ⟨10.1103/PhysRevA.72.032704⟩. ⟨hal-00508365⟩
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