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

Single quantum emitters embedded in solid-state hosts are an ideal platformfor realizing quantum information processors and quantum network nodes. Amongthe currently-investigated candidates, Er$^{3+}$ ions are particularlyappealing due to their 1.5 $\mu$m optical transition in the telecom band aswell as their long spin coherence times. However, the long lifetimes of theexcited state -- generally in excess of 1 ms -- along with the inhomogeneousbroadening of the optical transition result in significant challenges. Photonemission rates are prohibitively small, and different emitters generally createphotons with distinct spectra, thereby preventing multi-photon interference --a requirement for building large-scale, multi-node quantum networks. Here wesolve this challenge by demonstrating for the first time linear Stark tuning ofthe emission frequency of a single Er$^{3+}$ ion. Our ions are embedded in alithium niobate crystal and couple evanescently to a silicon nano-photoniccrystal cavity that provides an up to 143 increase of the measured decay rate.By applying an electric field along the crystal c-axis, we achieve a Starktuning greater than the ion's linewidth without changing the single-photonemission statistics of the ion. These results are a key step towards rare earthion-based quantum networks.

Frequency tunable, cavity-enhanced single erbium quantum emitter in the telecom band