Quantum-circuit simulation of three-flavor neutrino oscillations: vacuum, matter, and CP diagnostics

We simulate three-flavor neutrino oscillations on two-qubit quantum circuits. The flavor space is embedded as $\ket{00}=ν_e$, $\ket{01}=ν_μ$, $\ket{10}=ν_τ$ with the $\ket{11}$ channel kept inert, and the input mixing parameters (NuFIT~5.3, normal ordering) follow the global fit. We verify three phy