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 demonstrate a hierarchy of various classes of quantum correlations onexperimentally prepared two-qubit Werner-like states with controllable whitenoise. Werner states, which are white-noise-affected Bell states, areprototypal examples for studying such a hierarchy as a function of the amountof white noise. We experimentally generated Werner states and theirgeneralizations, i.e., partially entangled pure states affected by white noise.These states enabled us to study the hierarchy of the following classes ofcorrelations: separability, entanglement, steering in three- andtwo-measurement scenarios, and Bell nonlocality. We show that the generalizedWerner states (GWSs) reveal fundamentally different aspects of the hierarchycompared to the Werner states. In particular, we find five different parameterregimes of the GWSs, including those steerable in a two-measurement scenariobut not violating Bell inequalities. This regime cannot be observed for theusual Werner states. Furthermore, we find threshold curves separating differentregimes of the quantum correlations and find the optimal states which allow forthe largest amount of white noise, which does not destroy their specificquantum correlations (e.g., unsteerable entanglement). Thus, we could identifythe optimal Bell-nondiagonal GWSs, which are, for this specific meaning, morerobust against white noise compared to the Bell-diagonal GWSs (i.e., Wernerstates).

Experimental hierarchy and optimal robustness of quantum correlations of two-qubit states with controllable white noise