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I wanted to calculate the count of each gate used in the specific quantum circuit. For example in the below circuit, the result should be something like:

{'rz': 1, 'h': 4, 'cx': 3, 'measure': 4}

I saw a similar question asked, but it counts all the gates only in the longest path of the dag circuit which it creates using circuit_to_dag.

enter image description here

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2 Answers 2

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You can use QuantumCircuit's count_ops() method:

print(dict(circ.count_ops()))
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I think you are looking for the QuantumCircuit.count_ops() method. The documentation for it can be found here: https://qiskit.org/documentation/stubs/qiskit.circuit.QuantumCircuit.count_ops.html#qiskit.circuit.QuantumCircuit.count_ops it returns a dictionary of the number of each particular operation in the circuit.

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  • $\begingroup$ Thank you. It worked. $\endgroup$
    – Gopal Dahale
    Apr 13 at 5:52

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