Minimal example of Covalent integration with Qiskit

qiskit-covalent.py

from qiskit import QuantumCircuit, Aer
import qiskit
import covalent as ct


@ct.electron
def hadamard(circuit, qubit):
    circuit.h(qubit)
    return circuit


@ct.electron
def save_statevector(circuit, backend):
    circuit.save_statevector()
    return circuit


@ct.electron
@ct.lattice
def my_circuit(qubits, backend):
    qc = QuantumCircuit(qubits)
    for i in range(0, qubits):
        qc = hadamard(qc, i)
    qc = save_statevector(qc, backend)
    return qc


@ct.electron
def assemble(circuit):
    return qiskit.assemble(circuit)


@ct.electron
def get_statevector(qobj, backend):
    return backend.run(qobj).result().get_statevector()


@ct.lattice
def get_state(qubits, backend):
    qc = my_circuit(qubits, backend)
    qobj = assemble(qc)
    state = get_statevector(qobj, backend)
    return state


sim = Aer.get_backend("aer_simulator")
ct.dispatch(get_state)(2, sim)