This is very early, preliminary research. Actual fruits of a manned or otherwise fusion rocket to Mars may be decades ahead. Even at NASA's slow pace they could

This is very early, preliminary research. Actual fruits of a manned or otherwise fusion rocket to Mars may be decades ahead. Even at NASA's slow pace they could get there by the 2030es (or 2020es if they listen to Zubrin). Edit: at 150 tons payload for low orbit (early estimate) it's not exactly easy to launch. If you can do that on a man-rated rocket you're all ready for Mars on just chemical propulsion (in a Mars-direct/Mars-semidirect scenario).