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

Diamond membrane devices containing optically coherent nitrogen-vacancy (NV)centers are key to enable novel cryogenic experiments such as opticalground-state cooling of hybrid spin-mechanical systems and efficiententanglement distribution in quantum networks. Here, we report on thefabrication of a (3.4 $\pm$ 0.2) {\mu}m thin, smooth (surface roughness r$_q$ <0.4 nm over an area of 20 {\mu}m by 30 {\mu}m diamond membrane containingindividually resolvable, narrow linewidth (< 100 MHz) NV centers. We fabricatethis sample via a combination of high energy electron irradiation, hightemperature annealing, and an optimized etching sequence found via a systematicstudy of the diamond surface evolution on the microscopic level in differentetch chemistries. While our particular device dimensions are optimized forcavity-enhanced entanglement generation between distant NV centers in open,tuneable micro-cavities, our results have implications for a broad range ofquantum experiments that require the combination of narrow optical transitionsand {\mu}m-scale device geometry.

Optically coherent nitrogen-vacancy centers in {\mu}m-thin etched diamond membranes