English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

By means of a canonical transformation it is shown how it is possible torecast the equations for molecular nonlinear optics to completely eliminateground-state static dipole coupling terms. Such dipoles can certainly play ahighly important role in nonlinear optical response - but equations derived bystandard methods, in which these dipoles emerge only as special cases oftransition moments, prove unnecessarily complex. It has been shown that theelimination of ground-state static dipoles in favor of dipole shifts results ina considerable simplification in form of the nonlinear opticalsusceptibilities. In a fully quantum theoretical treatment the validity of sucha procedure has previously been verified using an expedient algorithm, whosedefense was afforded only by a highly intricate proof. In this paper it isshown how a canonical transformation method entirely circumvents such anapproach; it also affords new insights into the formulation of quantum fieldinteractions.Comment: 18 pages including 1 figur

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