def superdense_coding(bit_1: int = 1, bit_2: int = 1) -> qiskit.result.counts.Counts:
    if isinstance(bit_1, str) or isinstance(bit_2, str):
        raise TypeError("inputs must be integers.")
    if (bit_1 < 0) or (bit_2 < 0):
        raise ValueError("inputs must be positive.")
    if (math.floor(bit_1) != bit_1) or (math.floor(bit_2) != bit_2):
        raise ValueError("inputs must be exact integers.")
    if (bit_1 > 1) or (bit_2 > 1):
        raise ValueError("inputs must be less or equal to 1.")

    # build registers
    qr = QuantumRegister(2, "qr")
    cr = ClassicalRegister(2, "cr")

    quantum_circuit = QuantumCircuit(qr, cr)

    # entanglement the qubits
    quantum_circuit.h(1)
    quantum_circuit.cx(1, 0)

    # send the information
    c_information = str(bit_1) + str(bit_2)

    if c_information == "11":
        quantum_circuit.x(1)
        quantum_circuit.z(1)
    elif c_information == "10":
        quantum_circuit.z(1)
    elif c_information == "01":
        quantum_circuit.x(1)
    else:
        quantum_circuit.i(1)

    # unentangled the circuit
    quantum_circuit.cx(1, 0)
    quantum_circuit.h(1)

    # measure the circuit
    quantum_circuit.measure(qr, cr)

    backend = Aer.get_backend("aer_simulator")
    job = execute(quantum_circuit, backend, shots=1000)

    return job.result().get_counts(quantum_circuit)