Entanglement between 2 qubits

Hello World

In [1]:

from qiskit import *

In [2]:

qr = QuantumRegister(2)

In [3]:

cr = ClassicalRegister(2)

In [4]:

circuit = QuantumCircuit(qr, cr)

In [5]:

%matplotlib inline

In [6]:

circuit.draw()

Out[6]:

         
q0_0: |0>
         
q0_1: |0>
         
 c0_0: 0 
         
 c0_1: 0 
         

In [7]:

circuit.h(qr[0])

Out[7]:

<qiskit.circuit.instructionset.InstructionSet at 0x1a28852790>

In [8]:

circuit.draw(output='mpl')

Out[8]:

In [9]:

circuit.cx(qr[0],qr[1])

Out[9]:

<qiskit.circuit.instructionset.InstructionSet at 0x1a289546d0>

In [10]:

circuit.draw(output ='mpl')

Out[10]:

In [11]:

circuit.measure(qr, cr)

Out[11]:

<qiskit.circuit.instructionset.InstructionSet at 0x1a28993b90>

In [12]:

circuit.draw(output = 'mpl')

Out[12]:

In [13]:

simulator = Aer.get_backend('qasm_simulator')

In [14]:

result = execute(circuit, backend = simulator).result()

In [15]:

from qiskit.tools.visualization import plot_histogram 

In [16]:

plot_histogram(result.get_counts(circuit))

Out[16]:

In [17]:

IBMQ.load_account()

Out[17]:

<AccountProvider for IBMQ(hub='ibm-q', group='open', project='main')>

In [18]:

provider = IBMQ.get_provider('ibm-q')

In [19]:

qcomp = provider.get_backend('ibmq_16_melbourne')

In [20]:

job = execute(circuit, backend=qcomp)

In [21]:

from qiskit.tools.monitor import job_monitor

In [22]:

job_monitor(job)

Job Status: job has successfully run

In [26]:

result = job.result()

In [27]:

plot_histogram(result.get_counts(circuit))

Out[27]: