I gave a lot of thought to this myself, but concluded there was no way a sabre effect could be achieved.
I have designed a force field, though. I think it would work. It just has a few minor practical issues, like requiring the entire output of a power station to generate a field big enough to block a corridoor, an a tendency to incinerate anything that touches it. But the theory would work: You could flip marbles at it and they would just bounce off.
One day I will find a way to build it. I think I could run a small-scale prototype off no more than twenty kilowatts or so.