A frustration graph formalism for prime-d qudit observables yields a unitary map to generalized Pauli form plus bounds on observable sums used for qudit entanglement quantification.
Repeating this procedure m times produces a unitary U : H → (Cd)⊗ m ⊗ H ′ m, where H′ m is of unknown dimension, defined as U :=U1(1d ⊗ U2)(1⊗ 2 d ⊗ U3)
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Frustration graph formalism for qudit observables
A frustration graph formalism for prime-d qudit observables yields a unitary map to generalized Pauli form plus bounds on observable sums used for qudit entanglement quantification.