It was noted by science in the century that below the so-called Planck-Wheeler length - which is 1.62*10^-35m or 20 orders of magnitude smaller than an atomic nucleus - quantum gravity fluctuations become so violent that space itself actually 'boils' and becomes a quantum foam containing short-lived quantum wormholes. When the Mogensen introduced jumpgate technology to Earth science they also brought with them a material with very strange properties; Hyspiridan60, as it became known, when exposed to a very high strength electric field modulates the field to exactly the correct frequency to enlarge quantum wormholes. For some reason, still undetermined to this day, the resonance created in the field boundaries forces one end of the wormhole into normal space and the other into hyperspace. Provided that a strong enough field is applied the wormhole will expand to a diameter of approximately 2 miles for as long as the field is applied. When the field is removed the energy which forced the wormhole open dissipates as light and radiation into normal space and electrical energy into hyperspace. A side effect of the jumppoint creation process is that all jumppoints are one way: attempting to enter a jumppoint from normal space into hyperspace which was created for a ship entering normal space from hyperspace will result in your ship being torn apart by quantum gravitational tidal forces. Due to the enormous energies needed jumpengines and jumpgates must be given the exact mass of any ship (or the total mass if there is more than one ship) which will be passing through the jumppoint so that exactly the correct amount of energy is used to open and maintain the jumppoint: too little energy will result in the jumppoint collapsing as the ship(s) enter, completely destroying them. Too much energy expenditure is wasteful and is normally avoided unless the mass is not determined exactly.
