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Control of Quantum Systems by Strong Laser Fields

External constraints on optimal control strategies in molecular orientation and photofragmentation: role of zero-area fields

, , , &
Pages 816-821 | Received 30 Jun 2013, Accepted 09 Sep 2013, Published online: 05 Nov 2013
 

Abstract

We propose a new formulation of optimal and local control algorithms which enforces the constraint of time-integrated zero-area on the control field. The fulfillment of this requirement, crucial in many physical applications, is mathematically implemented by the introduction of a Lagrange multiplier aiming at penalizing the pulse area. This method allows one to design a control field with an area as small as possible, while bringing the dynamical system close to the target state. We test the efficiency of this approach on two control purposes in molecular dynamics, namely, orientation and photodissociation.

Notes

S.V. acknowledges financial support from the Fonds de la Recherche Scientifique (FNRS) of Belgium. Financial support from the Conseil Régional de Bourgogne and the QUAINT coordination action (EC FET-Open) is gratefully acknowledged by D.S. and M.N.

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