support multi-circuit jobs

[splch]

Summary

enable multi-circuit submission and retrieval of results

from qiskit import QuantumCircuit, transpile
from qiskit_ionq import IonQProvider
from math import pi

provider = IonQProvider()
backend = provider.get_backend("ionq_simulator")

qc1 = QuantumCircuit(2, 2, name="2 registers")
qc1.u(pi, pi / 2, pi / 4, 0)
qc1.measure_all()
qc1 = transpile(qc1, backend)

qc2 = QuantumCircuit(3, 3, name="inverted measurements")
qc2.h(1)
qc2.cx(1, 2)
qc2.measure([1, 2], [2, 0])

single_job = backend.run(qc1)
multi_job = backend.run([qc1, qc2])

single_job.get_counts()
# {'00 01': 1024}

multi_job.get_counts()
# [{'00 01': 1024}, {'000': 520, '110': 504}]

multi_job.get_counts(qc1)
# {'00 01': 1024}

Notes

we should offer a get_children() method that returns child ids and associate with indices of the Results' results list.

look into how experiments work

Details and comments

• [x] submit multi-circuit
• [x] retrieve results
• [x] pass tests
• [x] add multi-circuit tests
• [x] handle list of circuit metadata
• [x] correctly order results and metadata