IBM is an embarking on an ambitious project to find the next-generation chip technology to replace silicon. IBM will invest $3 billion over the next find years in this project. IBM will look into graphene, carbon nanotubes, quantum computing, silicon photonics and more technologies.

In the first stage they will build 7 nm silicon chips. But smaller architecture will need a completely new approach, and IBM intends to discover the best one.

http://www.graphene-info.com/ibm-invest-3-billion-trying-seek-next-gen-chip-technology-graphene-candidate