Convert from QASM code to Qiskit Code

Question

I'm looking for something that performs a conversion such as qiskit.circuit.QuantumCircuit.qasm, but for qasm code. In other words, a means to convert qasm code to qiskit code?

Not just converting from qasm code to a QuantumCircuit object, but yielding the actual qiskit code. The closest method I've found is to paste the qasm code into IBM's circuit composer then copying from there. However, I need to automate the process. Does anyone know about an existing function like this or do I need to write it myself?

Thanks in advance, and I'm new to this site so hopefully I haven't broken any rules! If I have, please let me know.

score 2 · Answer 1 · answered Feb 02 '24 at 16:27

2

I've just come across a website called the 'Quantum Programming Studio' which seems to serve this purpose: https://quantum-circuit.com/qconvert

Hope that helps!

answered Feb 02 '24 at 16:27

ryanhill1

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score 1 · Answer 2 · answered Jan 08 '23 at 14:57

The QuantumCircuit's method from_qasm_str takes an OpenQASM 2 definition of a circuit and converts it into a QuantumCircuit Qiskit object:

from qiskit import QuantumCircuit
circuit = QuantumCircuit.from_qasm_str("""
OPENQASM 2.0;
include "qelib1.inc";
qreg q[2];
cz q[0],q[1];
u(2pi,3pi,-5*pi) q[0];
""")
circuit.draw('mpl')

If the OpenQASM code is in a file, you can use QuantumCircuit.from_qasm_file('filename.qasm').

Convert from QASM code to Qiskit Code

2 Answers2