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 show that the density-matrix states of noncomposite qudit systems satisfyentropic and information relations like the subadditivity condition, strongsubadditivity condition, and Araki--Lieb inequality, which characterize hiddenquantum correlations of observables associated with these indivisible systems.We derive these relations employing a specific map of the entropic inequalitiesknown for density matrices of multiqudit systems to the inequalities fordensity matrices of single-qudit systems. We present the obtained relations inthe form of mathematical inequalities for arbitrary Hermitian NxN-matrices. Weconsider examples of superconducting qubits and qudits. We discuss the hiddencorrelations in single-qudit states as a new resource for quantum technologiesanalogous to the known resource in correlations associated with theentanglement in multiqudit systems.

Hidden correlations in indivisible qudits as a resource for quantum technologies on examples of superconducting circuits