def test_two_qubit_gates_with_symbols(gate: cirq.Gate, expected_length: int):
"""Tests that the gates with symbols decompose without error into a
circuit that has an equivalent unitary form.
"""
q0 = cirq.GridQubit(5, 3)
q1 = cirq.GridQubit(5, 4)
original_circuit = cirq.Circuit(gate(q0, q1))
converted_circuit = original_circuit.copy()
with cirq.testing.assert_deprecated("Use cirq.optimize_for_target_gateset",
deadline='v1.0'):
cgoc.ConvertToSqrtIswapGates().optimize_circuit(converted_circuit)
converted_circuit_iswap_inv = cirq.optimize_for_target_gateset(
original_circuit,
gateset=cirq.SqrtIswapTargetGateset(use_sqrt_iswap_inv=True))
converted_circuit_iswap = cirq.optimize_for_target_gateset(
original_circuit, gateset=cirq.SqrtIswapTargetGateset())
assert len(converted_circuit) <= expected_length
assert (len(converted_circuit_iswap) <= expected_length
or len(converted_circuit_iswap_inv) <= expected_length)
# Check if unitaries are the same
for val in np.linspace(0, 2 * np.pi, 12):
assert _unitaries_allclose(
cirq.resolve_parameters(original_circuit, {'t': val}),
cirq.resolve_parameters(converted_circuit, {'t': val}),
)
assert _unitaries_allclose(
cirq.resolve_parameters(original_circuit, {'t': val}),
cirq.resolve_parameters(converted_circuit_iswap, {'t': val}),
)
assert _unitaries_allclose(
cirq.resolve_parameters(original_circuit, {'t': val}),
cirq.resolve_parameters(converted_circuit_iswap_inv, {'t': val}),
)
def test_givens_rotation():
"""Test if the sqrt_iswap synthesis for a givens rotation is correct"""
thetas = np.linspace(0, 2 * np.pi, 100)
qubits = [cirq.NamedQubit('a'), cirq.NamedQubit('b')]
for theta in thetas:
program = cirq.Circuit(cirq.givens(theta).on(qubits[0], qubits[1]))
unitary = cirq.unitary(program)
test_program = program.copy()
with cirq.testing.assert_deprecated(
"Use cirq.optimize_for_target_gateset", deadline='v1.0'):
cgoc.ConvertToSqrtIswapGates().optimize_circuit(test_program)
converted_circuit_iswap_inv = cirq.optimize_for_target_gateset(
test_program,
gateset=cirq.SqrtIswapTargetGateset(use_sqrt_iswap_inv=True))
converted_circuit_iswap = cirq.optimize_for_target_gateset(
test_program, gateset=cirq.SqrtIswapTargetGateset())
for circuit in [
test_program, converted_circuit_iswap_inv,
converted_circuit_iswap
]:
circuit.append(cirq.IdentityGate(2).on(*qubits))
test_unitary = cirq.unitary(circuit)
np.testing.assert_allclose(
4,
np.abs(
np.trace(
np.conjugate(np.transpose(test_unitary)) @ unitary)))
def test_two_qubit_gates(gate: cirq.Gate, expected_length: int):
"""Tests that two qubit gates decompose to an equivalent and
serializable circuit with the expected length (or less).
"""
q0 = cirq.GridQubit(5, 3)
q1 = cirq.GridQubit(5, 4)
original_circuit = cirq.Circuit(gate(q0, q1))
converted_circuit = original_circuit.copy()
converted_circuit_iswap_inv = cirq.optimize_for_target_gateset(
original_circuit,
gateset=cirq.SqrtIswapTargetGateset(use_sqrt_iswap_inv=True))
converted_circuit_iswap = cirq.optimize_for_target_gateset(
original_circuit, gateset=cirq.SqrtIswapTargetGateset())
with cirq.testing.assert_deprecated("Use cirq.optimize_for_target_gateset",
deadline='v1.0'):
cgoc.ConvertToSqrtIswapGates().optimize_circuit(converted_circuit)
cig.SQRT_ISWAP_GATESET.serialize(converted_circuit)
cig.SQRT_ISWAP_GATESET.serialize(converted_circuit_iswap)
cig.SQRT_ISWAP_GATESET.serialize(converted_circuit_iswap_inv)
assert len(converted_circuit) <= expected_length
assert (len(converted_circuit_iswap) <= expected_length
or len(converted_circuit_iswap_inv) <= expected_length)
assert _unitaries_allclose(original_circuit, converted_circuit)
assert _unitaries_allclose(original_circuit, converted_circuit_iswap)
assert _unitaries_allclose(original_circuit, converted_circuit_iswap_inv)
def test_three_qubit_gate():
class ThreeQubitGate(cirq.testing.ThreeQubitGate):
pass
q0 = cirq.LineQubit(0)
q1 = cirq.LineQubit(1)
q2 = cirq.LineQubit(2)
circuit = cirq.Circuit(ThreeQubitGate()(q0, q1, q2))
with pytest.raises(TypeError):
cgoc.ConvertToSqrtIswapGates().optimize_circuit(circuit)
def test_two_qubit_gates(gate: cirq.Gate, expected_length: int):
"""Tests that two qubit gates decompose to an equivalent and
serializable circuit with the expected length (or less).
"""
q0 = cirq.GridQubit(5, 3)
q1 = cirq.GridQubit(5, 4)
original_circuit = cirq.Circuit(gate(q0, q1))
converted_circuit = original_circuit.copy()
cgoc.ConvertToSqrtIswapGates().optimize_circuit(converted_circuit)
cig.SQRT_ISWAP_GATESET.serialize(converted_circuit)
assert len(converted_circuit) <= expected_length
assert _unitaries_allclose(original_circuit, converted_circuit)
def test_three_qubit_gate():
class ThreeQubitGate(cirq.testing.ThreeQubitGate):
pass
q0 = cirq.LineQubit(0)
q1 = cirq.LineQubit(1)
q2 = cirq.LineQubit(2)
circuit = cirq.Circuit(ThreeQubitGate()(q0, q1, q2))
with pytest.raises(TypeError):
with cirq.testing.assert_deprecated(
"Use cirq.optimize_for_target_gateset", deadline='v1.0'):
cgoc.ConvertToSqrtIswapGates().optimize_circuit(circuit)
def test_givens_rotation():
"""Test if the sqrt_iswap synthesis for a givens rotation is correct"""
thetas = np.linspace(0, 2 * np.pi, 100)
qubits = [cirq.NamedQubit('a'), cirq.NamedQubit('b')]
for theta in thetas:
program = cirq.Circuit(cirq.givens(theta).on(qubits[0], qubits[1]))
unitary = cirq.unitary(program)
test_program = program.copy()
cgoc.ConvertToSqrtIswapGates().optimize_circuit(test_program)
test_unitary = cirq.unitary(test_program)
np.testing.assert_allclose(
4,
np.abs(np.trace(
np.conjugate(np.transpose(test_unitary)) @ unitary)))
def test_two_qubit_gates_with_symbols(gate: cirq.Gate, expected_length: int):
"""Tests that the gates with symbols decompose without error into a
circuit that has an equivalent unitary form.
"""
q0 = cirq.GridQubit(5, 3)
q1 = cirq.GridQubit(5, 4)
original_circuit = cirq.Circuit(gate(q0, q1))
converted_circuit = original_circuit.copy()
cgoc.ConvertToSqrtIswapGates().optimize_circuit(converted_circuit)
assert len(converted_circuit) <= expected_length
# Check if unitaries are the same
for val in np.linspace(0, 2 * np.pi, 12):
assert _unitaries_allclose(
cirq.resolve_parameters(original_circuit, {'t': val}),
cirq.resolve_parameters(converted_circuit, {'t': val}),
)
