OpenQASM circuits in Stim

Question

I would like to run circuits saved as OpenQASM circuits in Stim. Does anyone know how to import these circuits from OpenQASM to Stim?

Many thanks.

Answer 1

This isn't directly supported by qiskit or by stim, but you can try using cirq as an intermediary. I don't know how consistently this works, but it works on simple cases.

# pip install stimcirq ply
import stimcirq
from cirq.contrib.qasm_import import circuit_from_qasm
cirq_circuit = circuit_from_qasm("""
    OPENQASM 2.0;
    include "qelib1.inc";
qreg q[2];
creg m[2];

h q[0];
cx q[0],q[1];
measure q[0] -> m[0];
measure q[1] -> m[1];

""")
stim_circuit = stimcirq.cirq_circuit_to_stim_circuit(cirq_circuit)
print(stim_circuit)

H 0
TICK
CX 0 1
TICK
M 0 1
TICK