No, it doesn't work--it doesn't do anything--doesn't add weight, doesn't cause them to mature faster. They do lose a few days that they could be growing and maturing though. There is no scientific reason that it should really be beneficial in any way. There is really no way to make anything do anything faster on a flowering plant.
Ive done it, life got in the way of a harvest and i cut down 2 and had to leave 2 for almost 3 full days, so i left the light off for the **** of it. There was absolutely no difference in the plants, as i suspected.