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

The orbital angular momentum (OAM) of light, associated with a helicalstructure of the wavefunction, has a great potential for quantum photonics, asit allows attaching a higher dimensional quantum space to each photon.Hitherto, however, the use of OAM has been hindered by its difficultmanipulation. Here, exploiting the recently demonstrated spin-OAM informationtransfer tools, we report the first observation of the Hong-Ou-Mandelcoalescence of two incoming photons having nonzero OAM into the same outgoingmode of a beam-splitter. The coalescence can be switched on and off by varyingthe input OAM state of the photons. Such effect has been then exploited tocarry out the 1 \rightarrow 2 universal optimal quantum cloning of OAM-encodedqubits, using the symmetrization technique already developed for polarization.These results are finally shown to be scalable to quantum spaces of arbitrarydimension, even combining different degrees of freedom of the photons.

Optimal quantum cloning of orbital angular momentum photon qubits via Hong-Ou-Mandel coalescence