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

Since a rigorous framework for quantifying quantum coherence was establishedby Baumgratz et al. [T. Baumgratz, M. Cramer, and M. B. Plenio, Phys. Rev.Lett. 113, 140401 (2014)], many coherence measures have been found. For a givencoherence measure $C$, extending the values of $C$ on pure states to mixedstates by the convex roof construction, we will get a valid coherence measure$\overline{C}$, we call $\overline{C}$ the corresponding convex roof quantifierof $C$. Whether $C=\overline{C}$ for a given coherence measure is an importantquestion. In this work, we show that for the widely used coherence measure,$l_{1}$ norm of coherence $C_{l_{1}}$, it holds that $C_{l_{1}}\neq\overline{C_{l_{1}}}$.

$l_{1}$ norm of coherence is not equal to its convex roof quantifier