Wormholes and (especially) white holes are theoretical. Wormholes as described in cosmology are thought to be possible but completely uncontrollable and they would only exist for the briefest of instants. They have never been witnessed. However, a new member, George, does refer to the tunneling effect of photons in his experimental apparatus in a paper which can be found at his website:
as a kind of wormhole. The terminology is academic and I for one won't stand in his way as he certainly deserves recognition for his achievements.