“Quantum probability” in this case should really be called “noncommutative probability”: that emphasizes that there’s no direct connection to quantum mechanics as a physical theory. The basic mathematical feature is that random variables don’t commute.
“Quantum probability” in this case should really be called “noncommutative probability”: that emphasizes that there’s no direct connection to quantum mechanics as a physical theory. The basic mathematical feature is that random variables don’t commute.