def test_hadamard_gate_single(self):
# Programming project 2
# Test application of single Hadamard gate
# A Hadamard gate is applied to qbit 2.
# From Eq. (14), this puts qbit 2 in an equal superposition |0> and |1>.
# Therefore, the result of the calculation should vary randomly between the two possibilities, |000> and |010>.
num_qbits = 3
test_vector = [
None,
[ROOT2RECIPRICOL, 0.0, 0.0, 0.0, ROOT2RECIPRICOL, 0.0, 0.0, 0.0],
[ROOT2RECIPRICOL, 0.0, ROOT2RECIPRICOL, 0.0, 0.0, 0.0, 0.0, 0.0],
[ROOT2RECIPRICOL, ROOT2RECIPRICOL, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0]
]
test_states = [
None, {
"|000>": 0.5,
"|100>": 0.5
}, {
"|000>": 0.5,
"|010>": 0.5
}, {
"|000>": 0.5,
"|001>": 0.5
}
]
for i in range(1, num_qbits + 1):
hadamard = Register(num_qbits=num_qbits,
num_measures=self.num_measures)
hadamard.unit_vector[0] = 1.
hadamard.hadamard_gate(i)
states = hadamard.counting_states()
self.assertEqualWrapper(
hadamard.unit_vector, test_vector[i],
"Incorrect unit vector after Hadamard " + str(i))
self.assertReasonablyEqualDictionaryWrapper(
states, test_states[i], self.state_accuracy_percent,
"Incorrect single Hadamard gate probability")
