def test_inverse_and_append(self):
"""test appending inverted gates to circuits"""
q = QuantumRegister(1)
circ = QuantumCircuit(q, name='circ')
circ.s(q)
circ.append(SGate().inverse(), q[:])
circ.append(TGate().inverse(), q[:])
circ.t(q)
gate = circ.to_instruction()
circ = QuantumCircuit(q, name='circ')
circ.inverse()
circ.tdg(q)
circ.t(q)
circ.s(q)
circ.sdg(q)
gate_inverse = circ.to_instruction()
self.assertEqual(gate.inverse().definition, gate_inverse.definition)
def _define(self):
"""
gate xx_minus_yy(theta, beta) a, b {
rz(-beta) b;
rz(-pi/2) a;
sx a;
rz(pi/2) a;
s b;
cx a, b;
ry(theta/2) a;
ry(-theta/2) b;
cx a, b;
sdg b;
rz(-pi/2) a;
sxdg a;
rz(pi/2) a;
rz(beta) b;
}
"""
theta, beta = self.params
register = QuantumRegister(2, "q")
circuit = QuantumCircuit(register, name=self.name)
a, b = register
rules = [
(RZGate(-beta), [b], []),
(RZGate(-pi / 2), [a], []),
(SXGate(), [a], []),
(RZGate(pi / 2), [a], []),
(SGate(), [b], []),
(CXGate(), [a, b], []),
(RYGate(theta / 2), [a], []),
(RYGate(-theta / 2), [b], []),
(CXGate(), [a, b], []),
(SdgGate(), [b], []),
(RZGate(-pi / 2), [a], []),
(SXdgGate(), [a], []),
(RZGate(pi / 2), [a], []),
(RZGate(beta), [b], []),
]
for instr, qargs, cargs in rules:
circuit._append(instr, qargs, cargs)
self.definition = circuit
def _define_from_label(self):
q = QuantumRegister(self.num_qubits, "q")
initialize_circuit = QuantumCircuit(q, name="init_def")
for qubit, param in enumerate(reversed(self.params)):
initialize_circuit.append(Reset(), [q[qubit]])
if param == "1":
initialize_circuit.append(XGate(), [q[qubit]])
elif param == "+":
initialize_circuit.append(HGate(), [q[qubit]])
elif param == "-":
initialize_circuit.append(XGate(), [q[qubit]])
initialize_circuit.append(HGate(), [q[qubit]])
elif param == "r": # |+i>
initialize_circuit.append(HGate(), [q[qubit]])
initialize_circuit.append(SGate(), [q[qubit]])
elif param == "l": # |-i>
initialize_circuit.append(HGate(), [q[qubit]])
initialize_circuit.append(SdgGate(), [q[qubit]])
return initialize_circuit
def _define_from_label(self):
q = QuantumRegister(self.num_qubits, 'q')
initialize_circuit = QuantumCircuit(q, name='init_def')
for qubit, param in enumerate(reversed(self.params)):
initialize_circuit.append(Reset(), [q[qubit]])
if param == '1':
initialize_circuit.append(XGate(), [q[qubit]])
elif param == '+':
initialize_circuit.append(HGate(), [q[qubit]])
elif param == '-':
initialize_circuit.append(XGate(), [q[qubit]])
initialize_circuit.append(HGate(), [q[qubit]])
elif param == 'r': # |+i>
initialize_circuit.append(HGate(), [q[qubit]])
initialize_circuit.append(SGate(), [q[qubit]])
elif param == 'l': # |-i>
initialize_circuit.append(HGate(), [q[qubit]])
initialize_circuit.append(SdgGate(), [q[qubit]])
return initialize_circuit