# qiskit.quantum_info.Operator.reverse_qargs¶

Operator.reverse_qargs()[source]

Return an Operator with reversed subsystem ordering.

For a tensor product operator this is equivalent to reversing the order of tensor product subsystems. For an operator $$A = A_{n-1} \otimes ... \otimes A_0$$ the returned operator will be $$A_0 \otimes ... \otimes A_{n-1}$$.

Returns

the operator with reversed subsystem order.

Return type

Operator