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QuantumChannelChoiMatrices -> SemidefiniteProgram
Map quantum channel optimization to an SDP by expressing the channel relative entropy via Choi-Jamiolkowski isomorphism constraints combined with state relative entropy approximations.
Problem it solves
Channel relative entropy optimization requires maximizing over bipartite states subject to channel agreement constraints, which is natively bi-linear.
Consumes
Emits
The real projects this mechanism was found in. Attribution is the point — this is how the best teams actually do it.