Add samples of testing Q# code that prepares a quantum state #1873
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tcNickolas
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cesarzc,
DmitryVasilevsky,
sezna and
swernli
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ScottCarda-MS
approved these changes
Aug 22, 2024
Co-authored-by: Scott Carda <[email protected]>
swernli
reviewed
Aug 23, 2024
swernli
reviewed
Aug 23, 2024
swernli
approved these changes
Aug 23, 2024
Comment on lines
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| qsharp.eval(f"use qs = Qubit[2]; StatePrep.PrepareStateWithComplexPhases(qs);") | ||
| # Get the state of the allocated qubits and convert it to a dense vector. | ||
| state = qsharp.dump_machine().as_dense_state() | ||
| # Compare two vectors. | ||
| assert state == pytest.approx(expected_state) | ||
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| def test_state_exact_rejects_global_phase() -> None: | ||
| """Test that shows that the exact check from the previous test fails if the state is different by a global phase.""" | ||
| # Run Q# code that allocates the qubits and prepares the state but doesn't deallocate the qubits. | ||
| qsharp.eval(f"use qs = Qubit[2]; StatePrep.PrepareStateWithGlobalPhase(qs);") | ||
| # Get the state of the allocated qubits and convert it to a dense vector. | ||
| state = qsharp.dump_machine().as_dense_state() | ||
| # Compare two vectors. Here we expect them to be _not equal_ due to the global phase -1. | ||
| assert state != pytest.approx(expected_state) | ||
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| def test_state_global_phase() -> None: | ||
| """Test that Q# code prepares the expected state up to a global phase using Python test code.""" | ||
| # Run Q# code that allocates the qubits and prepares the state but doesn't deallocate the qubits. | ||
| qsharp.eval(f"use qs = Qubit[2]; StatePrep.PrepareStateWithGlobalPhase(qs);") | ||
| # Get the state of the allocated qubits. | ||
| state = qsharp.dump_machine() |
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If untrusted data (data from HTTP requests, user submitted files, etc.) is included in an eval statement it can allow an attacker to inject their own code. Note test
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Closes #1268.