This probe isn’t solar-powered, it’s laser-powered (because solar energy/area goes down too fast at larger distances. Creating and aiming the lasers for this is

This probe isn’t solar-powered, it’s laser-powered (because solar energy/area goes down too fast at larger distances. Creating and aiming the lasers for this is a technical challenge in itself) So, it could do a round-trip only if you had a similar laser set up at the destination. If you can do that, why build this tiny spacecraft?