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qiskit

Failed - Instruction bfunc is not supported

Here I want to run my code on a quantum computer using IBM Quantum Platform. But I am receiving this error Failed - Instruction bfunc is not supported.

    provider = IBMQ.get_provider(hub='ibm-q', group='open', project='main')
    backend = provider.get_backend('ibm_perth')

    qr = QuantumRegister(4)
    cr = ClassicalRegister(2)
    circuit = QuantumCircuit(qr,cr)
    circuit.x(qr[0])
    circuit.x(qr[1])
    circuit.ccx(qr[0], qr[1], qr[2])
    circuit.x(qr[1])
    circuit.ccx(qr[0], qr[1], qr[3])
    circuit.x(qr[0])
    circuit.measure(qr [0],cr[0])
    circuit.measure(qr [1],cr[1])
    mapped_circuit = transpile(qc, backend=backend)
    qobj = assemble(mapped_circuit, backend=backend, shots=1)

enter image description here The error I received.

Solution

  • Perth is on the list of upcoming deprecated devices: https://qiskit.slack.com/archives/CJG2E9LQP/p1690488935013449

    It seems ibm_perth does support dynamic circuits. We can check out this link for info on how to run dynamic circuits (which is what you need to run c_if). https://docs.quantum-computing.ibm.com/build/getting-started-with-dynamic-circuits