def test_google_v2_supremacy_circuit():
circuit = supremacy_v2.generate_boixo_2018_supremacy_circuits_v2_grid(
n_rows=4, n_cols=5, cz_depth=9, seed=0)
# We check that is exactly circuit inst_4x5_10_0
# in github.com/sboixo/GRCS cz_v2
assert len(circuit) == 11
assert len(list(circuit.findall_operations_with_gate_type(
ops.CZPowGate))) == 35
assert len(list(circuit.findall_operations_with_gate_type(
ops.XPowGate))) == 15
assert len(list(circuit.findall_operations_with_gate_type(
ops.YPowGate))) == 23
assert len(list(circuit.findall_operations_with_gate_type(
ops.ZPowGate))) == 32
assert len(list(circuit.findall_operations_with_gate_type(
ops.HPowGate))) == 40
qubits = [GridQubit(i, j) for i in range(4) for j in range(5)]
assert isinstance(circuit.operation_at(qubits[0], 2).gate, ops.YPowGate)
assert isinstance(circuit.operation_at(qubits[1], 2).gate, ops.YPowGate)
assert isinstance(circuit.operation_at(qubits[8], 2).gate, ops.XPowGate)
assert circuit.operation_at(qubits[0], 1).gate == ops.CZ
assert circuit.operation_at(qubits[5], 2).gate == ops.CZ
assert circuit.operation_at(qubits[8], 3).gate == ops.CZ
assert circuit.operation_at(qubits[13], 4).gate == ops.CZ
assert circuit.operation_at(qubits[12], 5).gate == ops.CZ
assert circuit.operation_at(qubits[13], 6).gate == ops.CZ
assert circuit.operation_at(qubits[14], 7).gate == ops.CZ
def test_supremacy_big():
circuit = supremacy_v2.generate_boixo_2018_supremacy_circuits_v2_grid(
n_rows=7, n_cols=7, cz_depth=6, seed=0)
qubit_order = circuit.all_qubits()
q0 = next(iter(qubit_order))
circuit.append(cirq.measure(q0))
mps_simulator_1 = ccq.mps_simulator.MPSSimulator(
simulation_options=ccq.mps_simulator.MPSOptions(cutoff=5e-5))
result_1 = mps_simulator_1.simulate(circuit,
qubit_order=qubit_order,
initial_state=0)
assert result_1.final_state.estimation_stats() == {
'estimated_fidelity': 0.997,
'memory_bytes': 11008,
'num_coefs_used': 688,
}
mps_simulator_2 = ccq.mps_simulator.MPSSimulator(
simulation_options=ccq.mps_simulator.MPSOptions(
method='isvd', max_bond=1, cutoff_mode='sum2'))
result_2 = mps_simulator_2.simulate(circuit,
qubit_order=qubit_order,
initial_state=0)
assert result_2.final_state.estimation_stats() == {
'estimated_fidelity': 1.0,
'memory_bytes': 1568,
'num_coefs_used': 98,
}
def test_supremacy_big():
circuit = supremacy_v2.generate_boixo_2018_supremacy_circuits_v2_grid(
n_rows=7, n_cols=7, cz_depth=6, seed=0
)
qubit_order = circuit.all_qubits()
q0 = next(iter(qubit_order))
circuit.append(cirq.measure(q0))
mps_simulator = ccq.mps_simulator.MPSSimulator(rsum2_cutoff=5e-5)
result = mps_simulator.simulate(circuit, qubit_order=qubit_order, initial_state=0)
assert result.final_state.estimation_stats() == {
'estimated_fidelity': 0.997,
'memory_bytes': 11008,
'num_svd_splits': 64,
'num_coefs_used': 688,
}
def test_supremacy_equal_more_cols():
circuit = supremacy_v2.generate_boixo_2018_supremacy_circuits_v2_grid(
n_rows=2, n_cols=3, cz_depth=3, seed=0
)
qubits = circuit.all_qubits()
assert_same_output_as_dense(circuit, qubits)
