OK, so I'm reading this article today on Light and Sound Vibrations being trapped in the same crystal and it reminds me (though they are almost completely unrelated) of Magneto-Optical Traps and Optical Tweezers...

1) Can a magneto-optical trap be modified to accelerate atoms rather hold them still?
2) If so, to what speed might these atoms be realistically driven?
3) Could this process be used to create some kind of coherent matter stream?