By zero speed landing, I am assuming we are talking ground speed? All you need is a head wind equal to the stall speed of the aircraft, thus eliminating any foward motion needed. You could also increase thrust and the angle of attack to stop foward motion, and do an elevator landing. Not a hard feat at all, most 3D pilots do it all day long.

No matter how you look at it, you have to compensate for the forces of gravity on the aircraft to stop foward motion and land at zero ground speed. No matter if you use rotors (Helis), thrust vectoring (Harrier), thrust and high AOA (3D elevator landing) or a good headwind to do it.

Good Luck and enjoy the testing!