1
$\begingroup$

When I submit a parametrized circuit as an input for the mixed operator in QAOAAnsatz, some strange results appear.

For example, when I submit a parametrized circuit with a parameter b as the input for the mixed operator, and set reps=4, the parameters of the circuit are ParameterView([ParameterVectorElement(β[0]), ParameterVectorElement(β[1]), ParameterVectorElement(β[2]), ParameterVectorElement(β[3]), ParameterVectorElement(γ[0]), ParameterVectorElement(γ[1]), ParameterVectorElement(γ[2]), ParameterVectorElement(γ[3])])

which is correct because parameter $\beta$ will substitute parameter b in QAOAAnsatz.

But if I transpile this circuit or decompose this circuit, the parameters change to ParameterView([Parameter(b), ParameterVectorElement(β[0]), ParameterVectorElement(β[1]), ParameterVectorElement(β[2]), ParameterVectorElement(β[3]), ParameterVectorElement(γ[0]), ParameterVectorElement(γ[1]), ParameterVectorElement(γ[2]), ParameterVectorElement(γ[3])]).

The change of the parameters

Could anyone tell me what is wrong with my code?

Improve this question
$\endgroup$
1
  • 3
    $\begingroup$ Hello! This seems very Qiskit-specific, could you open an issue at github.com/Qiskit/qiskit-terra/issues? That's a more suitable platform to discuss potential bugs like this as you're reaching the developers directly. If you open the issue there could you make sure to include a full snippet, including circuit construction, that reproduces the error? :) $\endgroup$
    – Cryoris
    Feb 1 at 13:47

0

Reset to default

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge that you have read and understand our privacy policy and code of conduct.

Browse other questions tagged or ask your own question.