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 Tools annual

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 monthly

Global: Zendy Plus monthly

Presents the access of premium content as premium feature

Premium Content

Global: Zendy Plus annual

Global: Zendy Free Plan

We use two fiber-based femtosecond frequency combs and a low-noise carriersuppression phase detection system to characterize the optical to microwavesynchronization achievable with such frequency divider systems. By applyingspecific noise reduction strategies, a residual phase noise as low as -120dBc/Hz at 1 Hz offset frequency from a 11.55 GHz carrier is measured. Thefractional frequency instability from a single optical-to-frequency divider is1.1E-16 at 1 s averaging down to below 2E-19 after only 1000 s. Thecorresponding rms time deviation is lower than 100 attoseconds up to 1000 saveraging duration.

Sub-100 attoseconds optics-to-microwave synchronization