Resource theory of asymmetric distinguishability for quantum channels
Xin Wang, Mark M. Wilde · Physical Review Research · 2019
The authors propose that distinguishability is a resource that can be quantified and manipulated, similar to energy or entanglement. This take allows to solve problems that were previously unsolved in quantum channel discrimination. Their approach leads to a mathematical formula for the asymptotic rate at which two different quantum channels can be discriminated, when they are called many times and processed in the most general way allowed by quantum mechanics.