def circuit_tester(prep, test_circ):
for gate in test_circ.gates():
id = gate.gate_id()
target = gate.target()
control = gate.control()
num_qubits = 5
qc1 = qforte.QuantumComputer(num_qubits)
qc2 = qforte.QuantumComputer(num_qubits)
qc1.apply_circuit_safe(prep)
qc2.apply_circuit_safe(prep)
qc1.apply_gate_safe(gate)
qc2.apply_gate(gate)
C1 = qc1.get_coeff_vec()
C2 = qc2.get_coeff_vec()
diff_vec = [(C1[i] - C2[i]) * np.conj(C1[i] - C2[i])
for i in range(len(C1))]
diff_norm = np.sum(diff_vec)
if (np.sum(diff_vec) != (0.0 + 0.0j)):
print('|C - C_safe|F^2 control target id')
print('----------------------------------------')
print(diff_norm, ' ', control, ' ', target,
' ', id)
return diff_norm
def test_trotterization_with_controlled_U(self):
circ_vec = [
qforte.build_circuit('Y_0 X_1'),
qforte.build_circuit('X_0 Y_1')
]
coef_vec = [-1.0719145972781818j, 1.0719145972781818j]
# the operator to be exponentiated
minus_iH = qforte.QuantumOperator()
for i in range(len(circ_vec)):
minus_iH.add_term(coef_vec[i], circ_vec[i])
ancilla_idx = 2
# exponentiate the operator
Utrot, phase = qforte.trotterization.trotterize_w_cRz(
minus_iH, ancilla_idx)
# Case 1: positive control
# initalize a quantum computer
qc = qforte.QuantumComputer(3)
# build HF state
qc.apply_gate(qforte.gate('X', 0, 0))
# put ancilla in |1> state
qc.apply_gate(qforte.gate('X', 2, 2))
# apply the troterized minus_iH
qc.apply_circuit(Utrot)
qforte.smart_print(qc)
coeffs = qc.get_coeff_vec()
self.assertAlmostEqual(coeffs[5], -0.5421829373 + 0.0j)
self.assertAlmostEqual(coeffs[6], -0.840260473 + 0.0j)
# Case 2: negitive control
# initalize a quantum computer
qc = qforte.QuantumComputer(3)
# build HF state
qc.apply_gate(qforte.gate('X', 0, 0))
# apply the troterized minus_iH
qc.apply_circuit(Utrot)
qforte.smart_print(qc)
coeffs = qc.get_coeff_vec()
self.assertAlmostEqual(coeffs[1], 1.0 + 0.0j)
def test_trotterization(self):
circ_vec = [qforte.QuantumCircuit(), qforte.build_circuit('Z_0')]
coef_vec = [-1.0j * 0.5, -1.0j * -0.04544288414432624]
# the operator to be exponentiated
minus_iH = qforte.QuantumOperator()
for i in range(len(circ_vec)):
minus_iH.add_term(coef_vec[i], circ_vec[i])
# exponentiate the operator
Utrot, phase = qforte.trotterization.trotterize(minus_iH)
inital_state = np.zeros(2**4, dtype=complex)
inital_state[3] = np.sqrt(2 / 3)
inital_state[12] = -np.sqrt(1 / 3)
# initalize a quantum computer with above coeficients
# i.e. ca|1100> + cb|0011>
qc = qforte.QuantumComputer(4)
qc.set_coeff_vec(inital_state)
# apply the troterized minus_iH
qc.apply_circuit(Utrot)
qc.apply_constant(phase)
qforte.smart_print(qc)
coeffs = qc.get_coeff_vec()
self.assertAlmostEqual(np.real(coeffs[3]), 0.6980209737879599)
self.assertAlmostEqual(np.imag(coeffs[3]), -0.423595782342996)
self.assertAlmostEqual(np.real(coeffs[12]), -0.5187235657531178)
self.assertAlmostEqual(np.imag(coeffs[12]), 0.25349397560041553)
def test_cY_gate(self):
# test the cY gate
nqubits = 2
basis0 = make_basis('00') # basis0:|00>
basis1 = make_basis('01') # basis1:|10>
basis2 = make_basis('10') # basis2:|01>
basis3 = make_basis('11') # basis3:|11>
computer = qforte.QuantumComputer(nqubits)
cY = qforte.gate('cY', 0, 1)
# test cY|00> = |00>
computer.set_state([(basis0, 1.0)])
computer.apply_gate(cY)
coeff0 = computer.coeff(basis0)
coeff1 = computer.coeff(basis1)
coeff2 = computer.coeff(basis2)
coeff3 = computer.coeff(basis3)
self.assertAlmostEqual(coeff0, 1.0 + 0.0j)
self.assertAlmostEqual(coeff1, 0.0 + 0.0j)
self.assertAlmostEqual(coeff2, 0.0 + 0.0j)
self.assertAlmostEqual(coeff3, 0.0 + 0.0j)
# test cY|01> = |01>
computer.set_state([(basis2, 1.0)])
computer.apply_gate(cY)
coeff0 = computer.coeff(basis0)
coeff1 = computer.coeff(basis1)
coeff2 = computer.coeff(basis2)
coeff3 = computer.coeff(basis3)
self.assertAlmostEqual(coeff0, 0.0 + 0.0j)
self.assertAlmostEqual(coeff1, 0.0 + 0.0j)
self.assertAlmostEqual(coeff2, 1.0 + 0.0j)
self.assertAlmostEqual(coeff3, 0.0 + 0.0j)
# test cY|10> = i|11>
computer.set_state([(basis1, 1.0)])
computer.apply_gate(cY)
coeff0 = computer.coeff(basis0)
coeff1 = computer.coeff(basis1)
coeff2 = computer.coeff(basis2)
coeff3 = computer.coeff(basis3)
self.assertAlmostEqual(coeff0, 0.0 + 0.0j)
self.assertAlmostEqual(coeff1, 0.0 + 0.0j)
self.assertAlmostEqual(coeff2, 0.0 + 0.0j)
self.assertAlmostEqual(coeff3, 0.0 + 1.0j)
# test cY|11> = -i|10>
computer.set_state([(basis3, 1.0)])
computer.apply_gate(cY)
coeff0 = computer.coeff(basis0)
coeff1 = computer.coeff(basis1)
coeff2 = computer.coeff(basis2)
coeff3 = computer.coeff(basis3)
self.assertAlmostEqual(coeff0, 0.0 + 0.0j)
self.assertAlmostEqual(coeff1, 0.0 - 1.0j)
self.assertAlmostEqual(coeff2, 0.0 + 0.0j)
self.assertAlmostEqual(coeff3, 0.0 + 0.0j)
def test_op_exp_val_1(self):
# test direct expectation value measurement
trial_state = qforte.QuantumComputer(4)
trial_prep = [None] * 5
trial_prep[0] = qforte.gate('H', 0, 0)
trial_prep[1] = qforte.gate('H', 1, 1)
trial_prep[2] = qforte.gate('H', 2, 2)
trial_prep[3] = qforte.gate('H', 3, 3)
trial_prep[4] = qforte.gate('cX', 0, 1)
trial_circ = qforte.QuantumCircuit()
#prepare the circuit
for gate in trial_prep:
trial_circ.add_gate(gate)
# use circuit to prepare trial state
trial_state.apply_circuit(trial_circ)
# gates needed for [a1^ a2] operator
X1 = qforte.gate('X', 1, 1)
X2 = qforte.gate('X', 2, 2)
Y1 = qforte.gate('Y', 1, 1)
Y2 = qforte.gate('Y', 2, 2)
# initialize circuits to make operator
circ1 = qforte.QuantumCircuit()
circ1.add_gate(X2)
circ1.add_gate(Y1)
circ2 = qforte.QuantumCircuit()
circ2.add_gate(Y2)
circ2.add_gate(Y1)
circ3 = qforte.QuantumCircuit()
circ3.add_gate(X2)
circ3.add_gate(X1)
circ4 = qforte.QuantumCircuit()
circ4.add_gate(Y2)
circ4.add_gate(X1)
#build the quantum operator for [a1^ a2]
a1_dag_a2 = qforte.QuantumOperator()
a1_dag_a2.add_term(0.0 - 0.25j, circ1)
a1_dag_a2.add_term(0.25, circ2)
a1_dag_a2.add_term(0.25, circ3)
a1_dag_a2.add_term(0.0 + 0.25j, circ4)
#get direct expectatoin value
exp = trial_state.direct_op_exp_val(a1_dag_a2)
self.assertAlmostEqual(exp, 0.2499999999999999 + 0.0j)
def test_io_simplified(self):
# test direct expectation value measurement
trial_state = qforte.QuantumComputer(4)
trial_circ = qforte.build_circuit('H_0 H_1 H_2 H_3 cX_0_1')
# use circuit to prepare trial state
trial_state.apply_circuit(trial_circ)
#build the quantum operator for [a1^ a2]
a1_dag_a2 = qforte.build_operator('0.0-0.25j, X_2 Y_1; 0.25, Y_2 Y_1; \
0.25, X_2 X_1; 0.0+0.25j, Y_2 X_1')
#get direct expectatoin value
exp = trial_state.direct_op_exp_val(a1_dag_a2)
self.assertAlmostEqual(exp, 0.2499999999999999 + 0.0j)
def test_Z_gate(self):
# test the Pauli Y gate
nqubits = 1
basis0 = make_basis('0')
basis1 = make_basis('1')
computer = qforte.QuantumComputer(nqubits)
Z = qforte.gate('Z', 0, 0)
# test Z|0> = |0>
computer.apply_gate(Z)
coeff0 = computer.coeff(basis0)
coeff1 = computer.coeff(basis1)
self.assertAlmostEqual(coeff0, 1.0 + 0.0j)
self.assertAlmostEqual(coeff1, 0.0 + 0.0j)
# test Z|1> = -|1>
computer.set_state([(basis1, 1.0)])
computer.apply_gate(Z)
coeff0 = computer.coeff(basis0)
coeff1 = computer.coeff(basis1)
self.assertAlmostEqual(coeff0, 0.0 + 0.0j)
self.assertAlmostEqual(coeff1, -1.0 + 0.0j)
def test_Y_gate(self):
# test the Pauli Y gate
nqubits = 1
basis0 = make_basis('0')
basis1 = make_basis('1')
computer = qforte.QuantumComputer(nqubits)
Y = qforte.gate('Y', 0, 0)
# test Y|0> = i|1>
computer.apply_gate(Y)
coeff0 = computer.coeff(basis0)
coeff1 = computer.coeff(basis1)
self.assertAlmostEqual(coeff0, 0.0 + 0.0j)
self.assertAlmostEqual(coeff1, 0.0 + 1.0j)
# test Y|1> = -i|0>
computer.set_state([(basis1, 1.0)])
computer.apply_gate(Y)
coeff0 = computer.coeff(basis0)
coeff1 = computer.coeff(basis1)
self.assertAlmostEqual(coeff0, 0.0 - 1.0j)
self.assertAlmostEqual(coeff1, 0.0 + 0.0j)
def test_computer(self):
print('\n')
# test that 1 - 1 = 0
# print('\n'.join(qc.str()))
X = qforte.gate('X', 0, 0)
print(X)
Y = qforte.gate('Y', 0, 0)
print(Y)
Z = qforte.gate('Z', 0, 0)
print(Z)
H = qforte.gate('H', 0, 0)
print(H)
R = qforte.gate('R', 0, 0, 0.1)
print(R)
S = qforte.gate('S', 0, 0)
print(S)
T = qforte.gate('T', 0, 0)
print(T)
cX = qforte.gate('cX', 0, 1)
print(cX)
cY = qforte.gate('cY', 0, 1)
print(cY)
cZ = qforte.gate('cZ', 0, 1)
print(cZ)
# qcircuit = qforte.QuantumCircuit()
# qcircuit.add_gate(qg)
# qcircuit.add_gate(qforte.QuantumGate(qforte.QuantumGateType.Hgate,1,1));
# print('\n'.join(qcircuit.str()))
# self.assertEqual(qforte.subtract(1, 1), 0)
computer = qforte.QuantumComputer(16)
# print(repr(computer))
# circuit = qforte.QuantumCircuit()
# circuit.add_gate(X)
for i in range(3000):
computer.apply_gate(X)
computer.apply_gate(Y)
computer.apply_gate(Z)
computer.apply_gate(H)
def test_cX_gate(self):
# test the cX/CNOT gate
nqubits = 2
basis0 = make_basis('00') # basis0:|00>
basis1 = make_basis('01') # basis1:|10>
basis2 = make_basis('10') # basis2:|01>
basis3 = make_basis('11') # basis3:|11>
computer = qforte.QuantumComputer(nqubits)
CNOT = qforte.gate('CNOT', 0, 1)
# test CNOT|00> = |00>
computer.set_state([(basis0, 1.0)])
computer.apply_gate(CNOT)
coeff0 = computer.coeff(basis0)
coeff1 = computer.coeff(basis1)
coeff2 = computer.coeff(basis2)
coeff3 = computer.coeff(basis3)
self.assertAlmostEqual(coeff0, 1.0 + 0.0j)
self.assertAlmostEqual(coeff1, 0.0 + 0.0j)
self.assertAlmostEqual(coeff2, 0.0 + 0.0j)
self.assertAlmostEqual(coeff3, 0.0 + 0.0j)
# test CNOT|10> = |11>
computer.set_state([(basis1, 1.0)])
computer.apply_gate(CNOT)
coeff0 = computer.coeff(basis0)
coeff1 = computer.coeff(basis1)
coeff2 = computer.coeff(basis2)
coeff3 = computer.coeff(basis3)
self.assertAlmostEqual(coeff0, 0.0 + 0.0j)
self.assertAlmostEqual(coeff1, 0.0 + 0.0j)
self.assertAlmostEqual(coeff2, 0.0 + 0.0j)
self.assertAlmostEqual(coeff3, 1.0 + 0.0j)
# test CNOT|01> = |01>
computer.set_state([(basis2, 1.0)])
computer.apply_gate(CNOT)
coeff0 = computer.coeff(basis0)
coeff1 = computer.coeff(basis1)
coeff2 = computer.coeff(basis2)
coeff3 = computer.coeff(basis3)
self.assertAlmostEqual(coeff0, 0.0 + 0.0j)
self.assertAlmostEqual(coeff1, 0.0 + 0.0j)
self.assertAlmostEqual(coeff2, 1.0 + 0.0j)
self.assertAlmostEqual(coeff3, 0.0 + 0.0j)
# test CNOT|11> = |10>
computer.set_state([(basis3, 1.0)])
computer.apply_gate(CNOT)
coeff0 = computer.coeff(basis0)
coeff1 = computer.coeff(basis1)
coeff2 = computer.coeff(basis2)
coeff3 = computer.coeff(basis3)
self.assertAlmostEqual(coeff0, 0.0 + 0.0j)
self.assertAlmostEqual(coeff1, 1.0 + 0.0j)
self.assertAlmostEqual(coeff2, 0.0 + 0.0j)
self.assertAlmostEqual(coeff3, 0.0 + 0.0j)
with self.assertRaises(ValueError) as context:
qforte.gate('CNOT', 0, 1.0)
self.assertTrue(')' in str(context.exception))