# qiskit.quantum_info.PTM.conjugate¶

PTM.conjugate()[source]

Return the conjugate quantum channel.

Note

This is equivalent to the matrix complex conjugate in the SuperOp representation ie. for a channel $$\mathcal{E}$$, the SuperOp of the conjugate channel $$\overline{{\mathcal{{E}}}}$$ is $$S_{\overline{\mathcal{E}^\dagger}} = \overline{S_{\mathcal{E}}}$$.