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

Hyperentanglement of photonic light modes is a valuable resource in quantuminformation processing and quantum communication. Here we propose a newprotocol using the interference of two optical nonlinearities and control ofthe heralding (detection) basis in the orbital-angular-momentum degree offreedom. This setup is capable of generating states which are both maximally-and hyper- entangled in at least four dimensions. The resultant state in thefour-dimensional case is a generalization of the so-called N00N state (amaximally path-entangled state well known in quantum optics). The production ofthis state is "perfect" (in other words noise-less) at least in the ideal case,excluding experimental imperfections. The presented setup is very versatile,and with control of the detection and pumping protocols a massively-largeparameter space, of arbitrarily-large dimensionality, may be searched for otherstates of interest. Also, we present specific cases demonstrating how the statemay be tuned from two, to three, to four dimensions -- which may be of furthertheoretical and experimental interest.

Generation of four-dimensional hyperentangled N00N states and beyond with photonic orbital angular momentum and detection-basis control