Standard

Textbook stabilizer circuits

19/19 passed in 154ms

Test	What it does	Result
test_bell_correlation	Measuring both Bell qubits yields equal outcomes across many seeds.	✅ pass
test_bell_stabilizers	The Bell state H(0).CX(0,1) has canonical stabilizers +XX, +ZZ.	✅ pass
test_coherent_estimate	For H(0).RZ(0, theta), estimate of <X> tracks cos(theta).	✅ pass
test_depolarize_flip_rate	DEPOLARIZE1(0.75) on |0> gives a measured-one frequency near 0.5.	✅ pass
test_fidelity_half	|0> and |+> overlap with fidelity 0.5.	✅ pass
test_fidelity_identical	Two identical Bell states have fidelity 1.0.	✅ pass
test_fidelity_orthogonal	Orthogonal |Phi+> and |Phi-> have fidelity 0.0.	✅ pass
test_ghz_correlation	GHZ all-Z measurements collapse to either all-zero or all-one.	✅ pass
test_ghz_stabilizers	GHZ on 4 qubits via H + CX chain has the expected canonical stabilizers.	✅ pass
test_measure_reset	MR measures the prior value then leaves the qubit in |0>.	✅ pass
test_measure_then_reuse	A qubit measured and reset can be re-prepared and remeasured.	✅ pass
test_noisy_flip_rate	X_ERROR(p) flips |0> with empirical frequency close to p.	✅ pass
test_reset_to_zero	R resets a qubit to |0>, so <Z> = +1 afterward.	✅ pass
test_stabilizer_deterministic	On a Bell state, measure of ZZ and XX is a deterministic +1.	✅ pass
test_stabilizer_random	On a product state |00>, measuring XX is a random coin flip.	✅ pass
test_teleport_minus	Teleporting |-> gives <X> = -1 on the output qubit q2.	✅ pass
test_teleport_one	Teleporting |1> gives <Z> = -1 on the output qubit q2.	✅ pass
test_teleport_plus	Teleporting |+> gives <X> = +1 on the output qubit q2.	✅ pass
test_teleport_zero	Teleporting |0> gives <Z> = +1 on the output qubit q2.	✅ pass