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

No-cloning theorem forbids perfect cloning of an unknown quantum state. Auniversal quantum cloning machine (UQCM), capable of producing two copies ofany input qubit with the optimal fidelity, is of fundamental interest and hasapplications in quantum information processing. This is enabled by delicatelytailored nonclassical correlations between the input qubit and the copyingqubits, which distinguish the UQCM from a classical counterpart, but whoseexperimental demonstrations are still lacking. We here implement the UQCM in asuperconducting circuit, and investigate these correlations. The measuredentanglements well agree with our theoretical prediction that they areindependent of the input state and thus constitute a universal quantum behaviorof the UQCM that was not previously revealed. Another feature of our experimentis the realization of deterministic and individual cloning, in contrast topreviously demonstrated UQCMs, which either were probabilistic or did notconstitute true cloning of individual qubits.

Experimental demonstration of entanglement-enabled universal quantum cloning in a circuit