I can find many qasm examples. How can I run them on different IBMQ devices?


3 Answers 3


This is a example for loading QASM, executing and displaying the result.

from qiskit import QuantumCircuit, Aer, execute

qasm_str = """OPENQASM 2.0;
include "qelib1.inc";
qreg q[2];
creg c[2];
h q[0];
cx q[0],q[1];
measure q -> c;

# From str.
qc = QuantumCircuit.from_qasm_str(qasm_str)
# If you want to read from file, use instead
# qc = QuantumCircuit.from_qasm_file("/path/to/file.qasm")

# You can choose other backend also.
backend = Aer.get_backend("qasm_simulator")

# Execute the circuit and show the result.
job = execute(qc, backend)
result = job.result()

The easiest way is to use the QuantumCircuit methods QuantumCircuit.from_qasm_file() or QuantumCircuit.from_qasm_str() depending on if your loading the QASM from a file or Python string, respectively.

  • 1
    $\begingroup$ Thanks. You means use QuantumCircuit methods in Jupyter notebook? $\endgroup$
    – peachnuts
    Jan 29, 2020 at 20:12
  • $\begingroup$ You can use them anywhere to construct a circuit from QASM code. $\endgroup$ Jan 29, 2020 at 20:12
from qiskit import *
simulator = Aer.get_backend('qasm_simulator')
  • 2
    $\begingroup$ Please provide some explanation, i.e. how the code solve a problem in the question. $\endgroup$ Feb 5, 2020 at 22:51
  • $\begingroup$ Shall I link GitHub repository inorder to do tat? $\endgroup$ Feb 6, 2020 at 6:15
  • 2
    $\begingroup$ Reddy: It is also possible, but please add some comments, like where to put your code etc. Please take some inspiration from another answers - look for tag Qiskit. $\endgroup$ Feb 6, 2020 at 7:49

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