It's theoretically possible. But it's still limited to the speed of light. You still can't move from one end of the universe to the other instantaneously.
http://https://www.forbes.com/sites/brucedorminey/2017/03/25/photon-rockets-might-make-mars-a-three-minute-trip/#36cd3cdf34fa http://https://www.forbes.com/sites/brucedorminey/2017/03/25/photon-rockets-might-make-mars-a-three-minute-trip/#36cd3cdf34fa