ResourceFunction[
 "QuantumToMultiwaySystem"][<|
  "Operator" -> {{1 + I, 1 - I}, {1 - I, 1 + I}}, "Basis" -> {{1, 0}, {0, 1}}|>, {1 + I, 1 - I}, 3, "StatesGraph", "IncludeStepNumber" -> True, "IncludeStateID" -> True]