Real Quantum Hardware Examples

Examples demonstrating how to use KOSMOS with real quantum hardware.

IBM Runtime

This example demonstrates how to run a smoke test on IBM Quantum hardware using IBM’s Runtime service via the IBMRuntimeRunner.

ibm_runtime_example.py
 1from qiskit_ibm_runtime import QiskitRuntimeService
 2
 3from kosmos.circuit_runner.ibm_runtime_utils import available_backends_list, minimal_circuit
 4from kosmos.circuit_runner.qiskit_runner import IBMRuntimeRunner
 5
 6
 7def ibm_runtime_example() -> None:
 8    """Run example of using IBM Runtime to execute a minimal circuit."""
 9    circuit = minimal_circuit()
10
11    # Initialize the Qiskit Runtime service used to access the IBM Quantum platform
12    # See https://quantum.cloud.ibm.com/docs/de/api/qiskit-ibm-runtime/qiskit-runtime-service
13    qiskit_runtime_service = QiskitRuntimeService()
14
15    # Print available backends
16    print(available_backends_list(qiskit_runtime_service))  # noqa: T201
17
18    # Initialize the IBM Runtime runner that can be used to execute circuits
19    runner = IBMRuntimeRunner(
20        qiskit_runtime_service=qiskit_runtime_service,
21        backend_name=None,  # Use the least busy backend
22        min_num_qubits=circuit.num_qubits,
23        num_shots=256,
24    )
25
26    # Run the circuit using real hardware and compute expectation values
27    expectation_values = runner.expectation_values([circuit])
28
29    print(f"Expectation value: {expectation_values[0][0]:.3f}")  # noqa: T201
30
31
32if __name__ == "__main__":
33    ibm_runtime_example()