Eliminating ground-state dipole moments in quantum optics via canonical transformation

Juzeliunas, Gediminas, Davila Romero, Luciana C and Andrews, David L (2003) Eliminating ground-state dipole moments in quantum optics via canonical transformation. Physical Review A (PRA), 68 (4).

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By means of a canonical transformation it is shown how it is possible to recast the equations for molecular nonlinear optics to completely eliminate ground-state static dipole coupling terms. Such dipoles can certainly play a highly important role in nonlinear optical response�but equations derived by standard methods, in which these dipoles emerge only as special cases of transition moments, prove unnecessarily complex. It has been shown that the elimination of ground-state static dipoles in favor of dipole shifts results in a considerable simplification in form of the nonlinear optical susceptibilities. In a fully quantum theoretical treatment the validity of such a procedure has previously been verified using an expedient algorithm, whose defense was afforded only by a highly intricate proof. In this paper it is shown how a canonical transformation method entirely circumvents such an approach; it also affords insights into the formulation of quantum field interactions.

Item Type: Article
Faculty \ School: Faculty of Science > School of Chemistry
UEA Research Groups: Faculty of Science > Research Groups > Physical and Analytical Chemistry (former - to 2017)
Faculty of Science > Research Groups > Chemistry of Light and Energy
Faculty of Science > Research Groups > Centre for Photonics and Quantum Science
Depositing User: Rachel Smith
Date Deposited: 27 Oct 2010 11:41
Last Modified: 07 Mar 2023 13:30
URI: https://ueaeprints.uea.ac.uk/id/eprint/10704
DOI: 10.1103/PhysRevA.68.043811


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