What is quantum genre?
Basically, the Quantum Genre is not theme-based but style-based. In other words, Quantum Works are not about quantum theory but quantum representation of characters and their worlds. The style is distinguished by a high degree of obscurity of both the narrative and characters which are subject to mutability and ambiguity.
If you want to know what that means, take a look at the revised reprint of my story Fluctuations in the anthology. When the story originaly appeared on Bewildering Stories it received some very favourable comments, which include some spoilers.