Researchers from France, South Korea, and Japan have designed a graphene-based “beam splitter” for electrical currents. This technology can be used for nanotechnology and quantum computing purposes. 

The tech is a type of optical interferometer. The beam-splitter, as its name implies, splits beams that enter it. 

The researchers are now attempting to further compact the design, which could increase its capabilities. 

For more information about the new technology, see this article by Graphene Info.

Image from research paper: Quantum Hall Valley Splitters and a Tunable Mach-Zehnder Interferometer in Graphene