
Top: High-dimensional color-entangled photon states from a photonic chip, manipulated and transmitted via telecommunications systems. Credits: Michael Kues. Left: Photonic chip including a nonlinear microgravity, used to generate color-entangled photon pairs. Right: Photonic chip connected to optical fiber, allowing the quantum state manipulation with standard telecommunications components. Credits: INRS University.
With leading corporations now investing in highly expensive and complex infrastructures to unleash the power of quantum technologies, INRS researchers have achieved a breakthrough in a light-weight photonic system created using on-chip devices and off-the-shelf telecommunications components. In their paper published in Nature, the team demonstrates that photons can become an accessible and powerful quantum resource when generated in the form of colour-entangled quDits.
Leading authors Michael Kues and Christian Reimer note that a highlight of the demonstrated platform is its accessibility: It is easy to build and exploits components used in standard telecommunication systems that are commercially available everywhere. Thus, in the short term, researchers around the world will be able to incorporate and push this technology forward, enabling a leap in the development of practical quantum applications.
Learn more: The multi-coloured photons that might change quantum information science
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