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

Color centers in diamond are quantum systems with optically activespin-states that show long coherence times and are therefore a promisingcandidate for the development of efficient spin-photon interfaces. However,only a small portion of the emitted photons is generated by the coherentoptical transition of the zero-phonon line (ZPL), which limits the overallperformance of the system. Embedding these emitters in photonic crystalcavities improves the coupling to the ZPL photons and increases their emissionrate. Here, we demonstrate the fabrication process of "Sawfish" cavities, adesign recently proposed that has the experimentally-realistic potential tosimultaneously enhance the emission rate by a factor of 46 and couple photonsinto a single-mode fiber with an efficiency of 88%. The presented processallows for the fabrication of fully suspended devices with a total length of20.5 $\mu$m and features size as small as 40 nm. The optical characterizationshows fundamental mode resonances that follow the behavior expected from thecorresponding design parameters and quality (Q) factors as high as 3825.Finally, we investigate the effects of nanofabrication on the devices and showthat, despite a noticeable erosion of the fine features, the measured cavityresonances deviate by only 0.9 (1.2)% from the corresponding simulated values.This proves that the Sawfish design is robust against fabricationimperfections, which makes it an attractive choice for the development ofquantum photonic networks.

Fabrication of Sawfish photonic crystal cavities in bulk diamond