def to_tket(self):
if self.out_par != mat22partition(Mat2.id(self.n_qubits)):
print(self.out_par)
raise NotImplementedError("The linear transformation part of the phase polynomial cannot yet be transformed into a tket circuit")
circuit = TketCircuit(self.n_qubits)
for parity, phase in self.zphases.items():
qubits = [i for i,s in enumerate(parity) if s == '1']
circuit.add_pauliexpbox(PauliExpBox([Pauli.Z]*len(qubits), phase), qubits)
# TODO add the linear combination part with CNOTs
Transform.DecomposeBoxes().apply(circuit)
return circuit
def h2_JW_sto3g_ansatz():
symbols = [Symbol("s0"), Symbol("s1"), Symbol("s2")]
ansatz = Circuit(4)
# Initialise in Hartree-Fock state
ansatz.X(0)
ansatz.X(1)
# Single excitations
ansatz.add_pauliexpbox(
PauliExpBox([Pauli.X, Pauli.Z, Pauli.Y, Pauli.I], -symbols[0]),
[0, 1, 2, 3])
ansatz.add_pauliexpbox(
PauliExpBox([Pauli.Y, Pauli.Z, Pauli.X, Pauli.I], symbols[0]),
[0, 1, 2, 3])
ansatz.add_pauliexpbox(
PauliExpBox([Pauli.I, Pauli.X, Pauli.Z, Pauli.Y], -symbols[1]),
[0, 1, 2, 3])
ansatz.add_pauliexpbox(
PauliExpBox([Pauli.I, Pauli.Y, Pauli.Z, Pauli.X], symbols[1]),
[0, 1, 2, 3])
# Double excitations
ansatz.add_pauliexpbox(
PauliExpBox([Pauli.X, Pauli.X, Pauli.X, Pauli.Y], -symbols[2]),
[0, 1, 2, 3])
ansatz.add_pauliexpbox(
PauliExpBox([Pauli.X, Pauli.X, Pauli.Y, Pauli.X], -symbols[2]),
[0, 1, 2, 3])
ansatz.add_pauliexpbox(
PauliExpBox([Pauli.X, Pauli.Y, Pauli.X, Pauli.X], symbols[2]),
[0, 1, 2, 3])
ansatz.add_pauliexpbox(
PauliExpBox([Pauli.Y, Pauli.X, Pauli.X, Pauli.X], symbols[2]),
[0, 1, 2, 3])
ansatz.add_pauliexpbox(
PauliExpBox([Pauli.X, Pauli.Y, Pauli.Y, Pauli.Y], -symbols[2]),
[0, 1, 2, 3])
ansatz.add_pauliexpbox(
PauliExpBox([Pauli.Y, Pauli.X, Pauli.Y, Pauli.Y], -symbols[2]),
[0, 1, 2, 3])
ansatz.add_pauliexpbox(
PauliExpBox([Pauli.Y, Pauli.Y, Pauli.X, Pauli.Y], symbols[2]),
[0, 1, 2, 3])
ansatz.add_pauliexpbox(
PauliExpBox([Pauli.Y, Pauli.Y, Pauli.Y, Pauli.X], symbols[2]),
[0, 1, 2, 3])
# Synthesise structures into primitive gates
DecomposeBoxes().apply(ansatz)
return ansatz, symbols
