Decoherence control by tracking a Hamiltonian reference molecule.
A molecular system in contact with a bath undergoes strong decoherence processes. We examine a control scheme to minimize dissipation, while maximally retaining coherent evolution, by relating the evolution of the molecule to that of an identical freely propagating system. We seek a driving field that maximizes the projection of the open molecular system onto the freely propagated one. The evolution in time of a molecular system consisting of two nonadiabatically coupled electronic states interacting with a bath is followed. The driving control field that overcomes the decoherence is calculated. A proposition to implement the scheme in the laboratory using feedback control is suggested.
Department of Chemistry, Northwestern University, Evanston, Illinois 60208-3113, USA.
Gil
G
Katz
Mark A
MA
Ratner
Ronnie
R
Kosloff