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 Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

We show that for the two widely used configurations of the double-$\Lambda$atom-light coupling scheme, one where the control fields are applied in thesame $\Lambda$-subsystem and another where they applied in different$\Lambda$-subsystems, the forward propagation of the probe and signal fields isdescribed by the same set of equations. We then use optimal control theory tofind the spatially-dependent optimal control fields which maximize theconversion efficiency from the probe to the signal field, for a given opticaldensity. The present work is expected to find application in the implementationof efficient frequency and orbital angular momentum conversion devices forquantum information processing, as well as to be useful to many otherapplications using the double-$\Lambda$ atom-light coupling scheme.

Ultimate conversion efficiency bound for the forward double-$\Lambda$ atom-light coupling scheme