Anders and Briegel in Python
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test_mercedes.py 1.7KB

il y a 7 ans
il y a 7 ans
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  1. from abp import GraphState
  2. from abp.util import xyz
  3. import pytest
  4. mock = pytest.importorskip("mock")
  5. def linear_cluster(n):
  6. g = GraphState(list(range(n)), vop="hadamard")
  7. g.act_circuit([(i, "hadamard") for i in range(n)])
  8. g.act_circuit([((i, i+1), "cz") for i in range(n-1)])
  9. return g
  10. def test_mercedes_example_1():
  11. """ Run an example provided by mercedes """
  12. g = linear_cluster(5)
  13. g.measure(3, "px")
  14. g.measure(2, "px")
  15. assert set(g.adj[0]) == {1}
  16. assert set(g.adj[1]) == {0, 4}
  17. assert set(g.adj[4]) == {1}
  18. def test_single_qubit_measurements():
  19. """ Various simple tests of measurements """
  20. # Test that measuring |0> in Z gives 0
  21. g = GraphState([0], vop="hadamard")
  22. assert g.measure_z(0) == 0, "Measuring |0> in Z gives 0"
  23. # Test that measuring |1> in Z gives 1
  24. g = GraphState([0], vop="hadamard")
  25. g.act_local_rotation(0, "px")
  26. assert g.measure_z(0) == 1, "Measuring |1> in Z gives 1"
  27. # Test that measuring |+> in X gives 0
  28. g = GraphState([0], vop="hadamard")
  29. g.act_local_rotation(0, "hadamard")
  30. assert g.measure_x(0) == 0
  31. assert g.measure_x(0) == 0, "Measuring |+> in X gives 0"
  32. g.act_local_rotation(0, "pz")
  33. assert g.measure_x(0) == 1, "Measuring |-> in X gives 1"
  34. # Test something else
  35. assert g.measure_y(0, force=0) == 0
  36. def test_is_determinate():
  37. """ Test whether asking if an outcome was random or determinate works """
  38. g = GraphState([0], vop="hadamard")
  39. assert g.measure_z(0, detail=True)["determinate"] == True
  40. assert g.measure_x(0, detail=True)["determinate"] == False
  41. def test_copy():
  42. """ Make a copy of a graph """
  43. a = mock.simple_graph()
  44. b = a.copy()
  45. assert a == b