▎ 摘　　要

The theory of transformation optics for light has fascinated the scientific community for almost one decade due to its revolutionary and groundbreaking implications. Because the propagation of electrons in condensed-matter systems is also described by a wave equation, one may also envision the extension of this idea to matter waves. Here, we suggest that graphene can be used as a platform to demonstrate a "tunnel" or "wormhole" for electrons. Based on an effective medium approach, we theoretically demonstrate that two properly designed graphene-based nanomaterials can effectively "annihilate" one another from an electronic point of view, and provide for the delocalization of the wave-function stationary states, similar to a wormhole.