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groverIteration.py
executable file
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groverIteration.py
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from qiskit import QuantumProgram
#################### Grover Iteration for 1 qubit
#Is it possible?
#################### Grover Iteration for 2 qubits
def gIteration00(qc, qr):
# apply the s gate to both qubits
qc.s(qr)
# apply h gate to the 2nd qubit
qc.h(qr[1])
# apply CNOT with control as 2nd qubit to target as 1st qubit
qc.cx(qr[0], qr[1])
# apply h gate to the 2nd qubit again
qc.h(qr[1])
# apply the s gate to both qubits
qc.s(qr)
# add the H gate in the Qubit 0 and 1
qc.h(qr)
# now use the X gate
qc.x(qr)
# apply h gate to the 2nd qubit again
qc.h(qr[1])
# apply CNOT with control as 2nd qubit to target as 1st qubit
qc.cx(qr[0], qr[1])
# apply h gate to the 2nd qubit again
qc.h(qr[1])
# now use the X gate
qc.x(qr)
# add the H gate in the Qubit 0 and 1
qc.h(qr)
return qc, qr
#########################################################
def gIteration01(qc, qr):
# apply the s gate to 1st qubit
qc.s(qr[0])
# apply h gate to the 2nd qubit
qc.h(qr[1])
# apply CNOT with control as 2nd qubit to target as 1st qubit
qc.cx(qr[0], qr[1])
# apply h gate to the 2nd qubit again
qc.h(qr[1])
# apply the s gate to 1st qubit
qc.s(qr[0])
# add the H gate in the Qubit 0 and 1
qc.h(qr)
# now use the X gate
qc.x(qr)
# apply h gate to the 2nd qubit again
qc.h(qr[1])
# apply CNOT with control as 2nd qubit to target as 1st qubit
qc.cx(qr[0], qr[1])
# apply h gate to the 2nd qubit again
qc.h(qr[1])
# now use the X gate
qc.x(qr)
# add the H gate in the Qubit 0 and 1
qc.h(qr)
return qc, qr
def gIteration10(qc, qr):
# apply the s gate to both qubits
qc.s(qr[1])
# apply h gate to the 2nd qubit
qc.h(qr[1])
# apply CNOT with control as 2nd qubit to target as 1st qubit
qc.cx(qr[0], qr[1])
# apply h gate to the 2nd qubit again
qc.h(qr[1])
# apply the s gate to both qubits
qc.s(qr[1])
# add the H gate in the Qubit 0 and 1
qc.h(qr)
# now use the X gate
qc.x(qr)
# apply h gate to the 2nd qubit again
qc.h(qr[1])
# apply CNOT with control as 2nd qubit to target as 1st qubit
qc.cx(qr[0], qr[1])
# apply h gate to the 2nd qubit again
qc.h(qr[1])
# now use the X gate
qc.x(qr)
# add the H gate in the Qubit 0 and 1
qc.h(qr)
return qc, qr
def gIteration11(qc, qr):
# apply h gate to the 2nd qubit
qc.h(qr[1])
# apply CNOT with control as 2nd qubit to target as 1st qubit
qc.cx(qr[0], qr[1])
# apply h gate to the 2nd qubit again
qc.h(qr[1])
# add the H gate in the Qubit 0 and 1
qc.h(qr)
# now use the X gate
qc.x(qr)
# apply h gate to the 2nd qubit again
qc.h(qr[1])
# apply CNOT with control as 2nd qubit to target as 1st qubit
qc.cx(qr[0], qr[1])
# apply h gate to the 2nd qubit again
qc.h(qr[1])
# now use the X gate
qc.x(qr)
# add the H gate in the Qubit 0 and 1
qc.h(qr)
return qc, qr
#################### Grover Iteration for 3 qubits
def gIteration000(qc, qr):
return qc, qr
def gIteration001(qc, qr):
return qc, qr
def gIteration010(qc, qr):
return qc, qr
def gIteration011(qc, qr):
return qc, qr
def gIteration100(qc, qr):
return qc, qr
def gIteration101(qc, qr):
return qc, qr
def gIteration110(qc, qr):
return qc, qr
def gIteration111(qc, qr):
return qc, qr
###########################################################
"""
if __name__ == '__main__':
Q_program = QuantumProgram()
Q_program1 = QuantumProgram()
qr = Q_program.create_quantum_register("qr", 2)
cr = Q_program.create_classical_register("cr", 2)
qc = Q_program.create_circuit("superposition", [qr], [cr])
qr1 = Q_program1.create_quantum_register("qr", 2)
cr1 = Q_program1.create_classical_register("cr", 2)
qc1 = Q_program1.create_circuit("superposition", [qr1], [cr1])
# put the qubits into a superposition of the states
qc.h(qr)
qc, qr = gIteration00(qc, qr)
#qc.measure(qr, cr)
qc, qr = gIteration01(qc, qr)
qc, qr = gIteration01(qc, qr)
qc, qr = gIteration01(qc, qr)
#qc.measure(qr, cr)
qc, qr = gIteration10(qc, qr)
qc, qr = gIteration10(qc, qr)
qc, qr = gIteration10(qc, qr)
qc, qr = gIteration10(qc, qr)
qc, qr = gIteration10(qc, qr)
# Copy the contents of the quantum register
qr1 = qr
qc.measure(qr, cr)
# Compiled and execute in the local_qasm_simulator
result = Q_program.execute(["superposition"], backend='local_qasm_simulator', shots=1)
# Show the results
print(result)
print(result.get_data("superposition"))
classical_state = result.get_data("superposition")['classical_state']
#Use Grover Iteration on the 2nd register based on the outcome of measuring the first
if(classical_state == 0):
qc1, qr1 = gIteration00(qc1, qr1)
elif(classical_state == 1):
qc1, qr1 = gIteration01(qc1, qr1)
elif(classical_state == 2):
qc1, qr1 = gIteration10(qc1, qr1)
elif(classical_state == 3):
qc1, qr1 = gIteration11(qc1, qr1)
qc1.measure(qr1, cr1)
result1 = Q_program1.execute(["superposition"], backend='local_qasm_simulator', shots=1)
print(result1)
print(result1.get_data("superposition"))
"""