import numpy as np from abp import clifford, qi import itertools as it def test_cz_table(): """ Does the CZ code work good? """ state_table = clifford.get_state_table(clifford.unitaries) rows = it.product([0, 1], it.combinations_with_replacement(range(24), 2)) for bond, (c1, c2) in rows: # Pick the input state input_state = state_table[bond, c1, c2] # Go and compute the output computed_output = np.dot(qi.cz, input_state) computed_output = clifford.normalize_global_phase(computed_output) # Now look up the answer in the table bondp, c1p, c2p = clifford.cz_table[bond, c1, c2] table_output = state_table[bondp, c1p, c2p] assert np.allclose(computed_output, table_output)