qisikt1.qs

# To add a new cell, type '#%%'
# To add a new markdown cell, type '#%% [markdown]'
import from qiskit.tools.visualization import plot_histogram, plot_circuit 
object if expression:
    pass 
    from qiskit import QuantumCircuit, QuantumRegister, ClassicalRegister
    from qiskit import execute, register
    from qiskit import IBMQ, Aer
    
    # register if you have a token
    API_TOKEN = ''
    if(API_TOKEN != ''):
        IBMQ.enable_account(API_TOKEN, "https://quantumexperience.ng.bluemix.net/api")
    
    # declaration
    QR =QuantumRegister(2, 'q')
    CR = ClassicalRegister(2, 'c')
    QC = QuantumCircuit(QR, CR, name='Bell state')
    # Build your Circuit
    QC.h(QR[0])
    QC.cx(QR[0], QR[1])
    QC.measure(QR[0], CR[0])
    QC.measure(QR[1], CR[1])
    # chceck for avaialbale backends
    PREFERRED_BACKEND = ''
    if PREFERRED_BACKEND != '':
        backend_object = Aer.get_backend(PREFERRED_BACKEND)
     else:
        backend_object = Aer.get_backend('qasm_simulator')
    # execute it
    if __name__ == '__main__':
        execution_job = execute(QC, backend_object)
        result = execution_job.result()
        print(result.get_counts())