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

We report continuous Raman sideband cooling (CRSC) of a long ion chain to themotional ground state beyond the Lamb-Dicke (LD) regime. By driving multiplesideband transitions simultaneously, we show that nearly all axial modes of a24-ion chain are cooled to the ground state, with an LD parameter as large as$\eta = 1.3$, spanning a frequency bandwidth of 4 MHz. Compared to traditionalground-state cooling methods such as pulsed sideband cooling orelectromagnetic-induced-transparency (EIT) cooling, our method offers two keyadvantages: robustness to timing errors; and an ultra-wide bandwidth unlimitedby the number of ions. This technique contributes as a crucial step forlarge-scale quantum information processing with linear ion chains and higherdimensions alike, and can be readily generalized to other atomic and molecularsystems.

Continuous Raman sideband cooling beyond the Lamb-Dicke Regime in a trapped ion chain