Grover full implementation

Grover_full.py

from matplotlib import pyplot as plt
import numpy as np
from qiskit import *
from qiskit.tools.visualization import plot_histogram

# Creating quantum circuit with 3 qubits and 3 classical bits
qc = QuantumCircuit(3,3)

# Preparing inputs
qc.h(0)
qc.h(1)
qc.h(2)

qc.barrier()

# Oracle function for number 5 = 101
qc.x(1)
qc.h(2)
qc.ccx(0,1,2)
qc.x(1)
qc.h(2)

qc.barrier()

# diffusion operator
qc.h(0)
qc.h(1)
qc.h(2)
qc.x(0)
qc.x(1)
qc.x(2)
qc.ccx(0,1,2)
qc.x(0)
qc.x(1)
qc.x(2)
qc.h(0)
qc.h(1)
qc.h(2)

qc.barrier()

# measuring the output
qc.measure(0,0)
qc.measure(1,1)
qc.measure(2,2)

qc.draw(output='mpl')

# Running the experiment in simulator
simulator = Aer.get_backend('qasm_simulator')
result = execute(qc,backend=simulator,shots=1024).result()
plot_histogram(result.get_counts())