Nobel-prize winning physicist [Richard Feynman](http://en.wikipedia.org/wiki/Feynman) is given credit as inventing the concept of quantum computers in about 1982 in the paper "[Simulating physics with computers](http://link.springer.com/article/10.1007%2FBF02650179)." 

**Where is the concept of a quantum computer first used/appearing in science fiction?**