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

A study of highly symmetric site-controlled Pyramidal In0.25Ga0.75As quantumdots (QDs) is presented. It is discussed that polarization-entangled photonscan be also obtained from Pyramidal QDs of different designs from the onealready reported in Juska et al. (Nat. Phot. 7, 527, 2013). Moreover, some ofthe limitations for a higher density of entangled photon emitters areaddressed. Among these issues are (1) a remaining small fine-structuresplitting and (2) an effective QD charging under non-resonant excitationconditions, which strongly reduce the number of useful biexciton-excitonrecombination events. A possible solution of the charging problem isinvestigated exploiting a dual-wavelength excitation technique, which allows agradual QD charge tuning from strongly negative to positive and, eventually,efficient detection of entangled photons from QDs, which would be otherwiseineffective under a single-wavelength (non-resonant) excitation.

Conditions for entangled photon emission from (111)B site-controlled Pyramidal quantum dots