def test_circuit_set_parameters_with_dictionary(trainable): """Check updating parameters of circuit with list.""" params = [0.123, 0.456, 0.789] c1 = Circuit(3) c1.add(gates.X(0)) c1.add(gates.X(2)) if trainable: c1.add(gates.U1(0, theta=0, trainable=trainable)) else: c1.add(gates.U1(0, theta=params[0], trainable=trainable)) c2 = Circuit(3) c2.add(gates.RZ(1, theta=0)) c2.add(gates.CZ(1, 2)) c2.add(gates.CU1(0, 2, theta=0)) c2.add(gates.H(2)) c = c1 + c2 if trainable: params_dict = {c.queue[i]: p for i, p in zip([2, 3, 5], params)} c.set_parameters(params_dict) assert c.queue[2].parameters == params[0] else: params_dict = {c.queue[3]: params[1], c.queue[5]: params[2]} c.set_parameters(params_dict) assert c.queue[3].parameters == params[1] assert c.queue[5].parameters == params[2] # test not passing all parametrized gates c.set_parameters({c.queue[5]: 0.7891}) if trainable: assert c.queue[2].parameters == params[0] assert c.queue[3].parameters == params[1] assert c.queue[5].parameters == 0.7891
def test_singlequbit_gates(): c = Circuit(2) c.add(gates.H(0)) c.add(gates.X(1)) c.add(gates.Y(0)) c.add(gates.Z(1)) c.add(gates.S(0)) c.add(gates.SDG(1)) c.add(gates.T(0)) c.add(gates.TDG(1)) c.add(gates.I(0)) target = f"""// Generated by QIBO {__version__} OPENQASM 2.0; include "qelib1.inc"; qreg q[2]; h q[0]; x q[1]; y q[0]; z q[1]; s q[0]; sdg q[1]; t q[0]; tdg q[1]; id q[0];""" assert_strings_equal(c.to_qasm(), target)
def test_x_decomposition_errors(use_toffolis): """Check ``X`` decomposition errors.""" gate = gates.X(0).controlled_by(1, 2, 3, 4) with pytest.raises(ValueError): decomp = gate.decompose(2, 3, use_toffolis=use_toffolis) gate.nqubits = 6 with pytest.raises(ValueError): decomp = gate.decompose(5, 6, use_toffolis=use_toffolis)
def test_queue_class(): from qibo.abstractions.circuit import _Queue queue = _Queue(4) gatelist = [gates.H(0), gates.H(1), gates.X(0), gates.H(2), gates.CNOT(1, 2), gates.Y(3)] for g in gatelist: queue.append(g) assert queue.moments == [[gatelist[0], gatelist[1], gatelist[3], gatelist[5]], [gatelist[2], gatelist[4], gatelist[4], None]]
def test_multiqubit_gates(): c = Circuit(2) c.add(gates.H(0)) c.add(gates.CNOT(0, 1)) c.add(gates.X(1)) c.add(gates.SWAP(0, 1)) c.add(gates.X(0).controlled_by(1)) # `controlled_by` here falls back to CNOT and should work target = f"""// Generated by QIBO {__version__} OPENQASM 2.0; include "qelib1.inc"; qreg q[2]; h q[0]; cx q[0],q[1]; x q[1]; swap q[0],q[1]; cx q[1],q[0];""" assert_strings_equal(c.to_qasm(), target)
def test_circuit_addition_errors(): c1 = Circuit(2) c1.add(gates.H(0)) c1.add(gates.H(1)) c2 = Circuit(1) c2.add(gates.X(0)) with pytest.raises(ValueError): c3 = c1 + c2
def test_gates_commute(): assert gates.H(0).commutes(gates.X(1)) assert gates.H(0).commutes(gates.H(1)) assert gates.H(0).commutes(gates.H(0)) assert not gates.H(0).commutes(gates.Y(0)) assert not gates.CNOT(0, 1).commutes(gates.SWAP(1, 2)) assert not gates.CNOT(0, 1).commutes(gates.H(1)) assert not gates.CNOT(0, 1).commutes(gates.Y(0).controlled_by(2)) assert not gates.CNOT(2, 3).commutes(gates.CNOT(3, 0)) assert gates.CNOT(0, 1).commutes(gates.Y(2).controlled_by(0))
def test_gate_types(): import collections c = Circuit(3) c.add(gates.H(0)) c.add(gates.H(1)) c.add(gates.X(2)) c.add(gates.CNOT(0, 2)) c.add(gates.CNOT(1, 2)) c.add(gates.TOFFOLI(0, 1, 2)) target_counter = collections.Counter({"h": 2, "x": 1, "cx": 2, "ccx": 1}) assert c.ngates == 6 assert c.gate_types == target_counter
def test_circuit_draw_line_wrap(): """Test circuit text draw with line wrap.""" ref_line_wrap_50 = \ 'q0: ─H─U1─U1─U1─U1───────────────────────────x───I───f ...\n' \ 'q1: ───o──|──|──|──H─U1─U1─U1────────────────|─x─I───| ...\n' \ 'q2: ──────o──|──|────o──|──|──H─U1─U1────────|─|─────| ...\n' \ 'q3: ─────────o──|───────o──|────o──|──H─U1───|─x───M─| ...\n' \ 'q4: ────────────o──────────o───────o────o──H─x───────f ...\n' \ '\n' \ 'q0: ... ─o────gf───M─\n' \ 'q1: ... ─U3───|──o─M─\n' \ 'q2: ... ────X─gf─o─M─\n' \ 'q3: ... ────o────o───\n' \ 'q4: ... ────o────X───' ref_line_wrap_30 = \ 'q0: ─H─U1─U1─U1─U1──────────────── ...\n' \ 'q1: ───o──|──|──|──H─U1─U1─U1───── ...\n' \ 'q2: ──────o──|──|────o──|──|──H─U1 ...\n' \ 'q3: ─────────o──|───────o──|────o─ ...\n' \ 'q4: ────────────o──────────o────── ...\n' \ '\n' \ 'q0: ... ───────────x───I───f─o────gf── ...\n' \ 'q1: ... ───────────|─x─I───|─U3───|──o ...\n' \ 'q2: ... ─U1────────|─|─────|────X─gf─o ...\n' \ 'q3: ... ─|──H─U1───|─x───M─|────o────o ...\n' \ 'q4: ... ─o────o──H─x───────f────o────X ...\n' \ '\n' \ 'q0: ... ─M─\n' \ 'q1: ... ─M─\n' \ 'q2: ... ─M─\n' \ 'q3: ... ───\n' \ 'q4: ... ───' import numpy as np circuit = Circuit(5) for i1 in range(5): circuit.add(gates.H(i1)) for i2 in range(i1 + 1, 5): circuit.add(gates.CU1(i2, i1, theta=0)) circuit.add(gates.SWAP(0, 4)) circuit.add(gates.SWAP(1, 3)) circuit.add(gates.I(*range(2))) circuit.add(gates.M(3, collapse=True)) circuit.add(gates.fSim(0, 4, 0, 0)) circuit.add(gates.CU3(0, 1, 0, 0, 0)) circuit.add(gates.TOFFOLI(4, 3, 2)) circuit.add(gates.GeneralizedfSim(0, 2, np.eye(2), 0)) circuit.add(gates.X(4).controlled_by(1, 2, 3)) circuit.add(gates.M(*range(3))) assert circuit.draw(line_wrap=50) == ref_line_wrap_50 assert circuit.draw(line_wrap=30) == ref_line_wrap_30
def test_measurements(): c = Circuit(2) c.add(gates.X(0)) c.add(gates.Y(1)) c.add(gates.M(0, 1)) target = f"""// Generated by QIBO {__version__} OPENQASM 2.0; include "qelib1.inc"; qreg q[2]; creg register0[2]; x q[0]; y q[1]; measure q[0] -> register0[0]; measure q[1] -> register0[1];""" assert_strings_equal(c.to_qasm(), target)
def test_circuit_on_qubits(): c = Circuit(3) c.add([gates.H(0), gates.X(1), gates.Y(2)]) c.add([gates.CNOT(0, 1), gates.CZ(1, 2)]) c.add(gates.H(1).controlled_by(0, 2)) new_gates = list(c.on_qubits(2, 5, 4)) assert new_gates[0].target_qubits == (2, ) assert new_gates[1].target_qubits == (5, ) assert new_gates[2].target_qubits == (4, ) assert new_gates[3].target_qubits == (5, ) assert new_gates[3].control_qubits == (2, ) assert new_gates[4].target_qubits == (4, ) assert new_gates[4].control_qubits == (5, ) assert new_gates[5].target_qubits == (5, ) assert new_gates[5].control_qubits == (2, 4)
def test_gates_of_type(): c = Circuit(3) c.add(gates.H(0)) c.add(gates.H(1)) c.add(gates.CNOT(0, 2)) c.add(gates.X(1)) c.add(gates.CNOT(1, 2)) c.add(gates.TOFFOLI(0, 1, 2)) c.add(gates.H(2)) h_gates = c.gates_of_type(gates.H) cx_gates = c.gates_of_type("cx") assert h_gates == [(0, c.queue[0]), (1, c.queue[1]), (6, c.queue[6])] assert cx_gates == [(2, c.queue[2]), (4, c.queue[4])] with pytest.raises(TypeError): c.gates_of_type(5)
def test_circuit_invert(measurements): c = Circuit(3) gatelist = [gates.H(0), gates.X(1), gates.Y(2), gates.CNOT(0, 1), gates.CZ(1, 2)] c.add(gatelist) if measurements: c.add(gates.M(0, 2)) invc = c.invert() for g1, g2 in zip(invc.queue, gatelist[::-1]): g2 = g2.dagger() assert isinstance(g1, g2.__class__) assert g1.target_qubits == g2.target_qubits assert g1.control_qubits == g2.control_qubits if measurements: assert invc.measurement_gate.target_qubits == (0, 2) assert invc.measurement_tuples == {"register0": (0, 2)}
def test_x_decompose_with_cirq(target, controls, free): """Check that decomposition of multi-control ``X`` agrees with Cirq.""" import cirq from qibo.tests import cirq_utils gate = gates.X(target).controlled_by(*controls) qibo_decomp = gate.decompose(*free, use_toffolis=False) # Calculate the decomposition using Cirq. nqubits = max((target, ) + controls + free) + 1 qubits = [cirq.LineQubit(i) for i in range(nqubits)] controls = [qubits[i] for i in controls] free = [qubits[i] for i in free] cirq_decomp = cirq.decompose_multi_controlled_x(controls, qubits[target], free) assert len(qibo_decomp) == len(cirq_decomp) for qibo_gate, cirq_gate in zip(qibo_decomp, cirq_decomp): cirq_utils.assert_gates_equivalent(qibo_gate, cirq_gate)
def test_circuit_decompose(measurements): c = Circuit(4) c.add([gates.H(0), gates.X(1), gates.Y(2)]) c.add([gates.CZ(0, 1), gates.CNOT(2, 3), gates.TOFFOLI(0, 1, 3)]) if measurements: c.add(gates.M(0, 2)) decompc = c.decompose() dgates = [] for gate in c.queue: dgates.extend(gate.decompose()) for g1, g2 in zip(decompc.queue, dgates): assert isinstance(g1, g2.__class__) assert g1.target_qubits == g2.target_qubits assert g1.control_qubits == g2.control_qubits if measurements: assert decompc.measurement_gate.target_qubits == (0, 2) assert decompc.measurement_tuples == {"register0": (0, 2)}
def test_toffoli(): c = Circuit(3) c.add(gates.Y(0)) c.add(gates.TOFFOLI(0, 1, 2)) c.add(gates.X(1)) c.add(gates.TOFFOLI(0, 2, 1)) c.add(gates.Z(2)) c.add(gates.TOFFOLI(1, 2, 0)) target = f"""// Generated by QIBO {__version__} OPENQASM 2.0; include "qelib1.inc"; qreg q[3]; y q[0]; ccx q[0],q[1],q[2]; x q[1]; ccx q[0],q[2],q[1]; z q[2]; ccx q[1],q[2],q[0];""" assert_strings_equal(c.to_qasm(), target)
def test_x_decompose_with_few_controls(): """Check ``X`` decomposition with less than three controls.""" gate = gates.X(0) decomp = gate.decompose(1, 2) assert len(decomp) == 1 assert isinstance(decomp[0], gates.X)
def test_x_controlled_by(controls, instance): gate = gates.X(0).controlled_by(*controls) assert gate.target_qubits == (0,) assert gate.control_qubits == controls assert isinstance(gate, getattr(gates, instance))