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- from abp import GraphState
- from anders_briegel import graphsim
-
- def test_measurements():
-
- # Test that measuring |0> in Z gives 0
- g = GraphState([0])
- assert g.measure(0, "pz") == 0, "Measuring |0> in Z gives 0"
-
- # Test that measuring |1> in Z gives 1
- g = GraphState([0])
- g.act_local_rotation(0, "px")
- assert g.measure(0, "pz") == 1, "Measuring |1> in Z gives 1"
-
- # Test that measuring |+> in X gives 0
- g = GraphState([0])
- g.act_local_rotation(0, "hadamard")
- assert g.measure(0, "px") == 0
- assert g.measure(0, "px") == 0, "Measuring |+> in X gives 0"
- g.act_local_rotation(0, "pz")
- assert g.measure(0, "px") == 1, "Measuring |-> in X gives 1"
-
- # Test random outcomes
- ones = 0
- for i in range(1000):
- g = GraphState([0])
- g.act_local_rotation(0, "hadamard")
- ones += g.measure(0, "pz")
- assert 400 < ones < 600, "This is a probabilistic test!"
-
-
-
- def test_z_measurement_against_ab():
- for i in range(10):
- a = graphsim.GraphRegister(1)
- b = GraphState()
- b.add_node(0)
- #print a.measure(0, graphsim.lco_Z)
- #print b.measure(0, "pz")
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