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

We observe the coherence of an interacting two-component Bose-Einsteincondensate (BEC) surviving for seconds in a trapped Ramsey interferometer.Mean-field driven collective oscillations of two components lead to periodicdephasing and rephasing of condensate wave functions with a slow decay of theinterference fringe visibility. We apply spin echo synchronous with theself-rephasing of the condensate to reduce the influence of state-dependentatom losses, significantly enhancing the visibility up to 0.75 at the evolutiontime of 1.5s. Mean-field theory consistently predicts higher visibility thanexperimentally observed values. We quantify the effects of classical andquantum noise and infer a coherence time of 2.8 s for a trapped condensate of5.5e4 interacting atoms.

Long-lived periodic revivals of coherence in an interacting Bose-Einstein condensate