“Quantum wormholes offer a faster-than-light short cut to the rest of the cosmos — at least in principle. Now physicists believe they could open these doors wide enough to allow someone to travel through.”
But matter travelling through a wormhole adds positive energy to it, which collapses it into a black hole, so any would-be traveller would be crushed.

“Ghost radiation” could be used to offset the positive energy of the travelling matter, but keeping the wormhole open wide enough to send a person would take a negative field equivalent to the energy liberated by converting the mass of Jupiter.