Quantum Entanglement & CHSH Bell Inequality

Two entangled qubits measured at angles a,b. CHSH value S = |E(a,b) − E(a,b') + E(a',b) + E(a',b')| ≤ 2 classically but quantum mechanics achieves S = 2√2 ≈ 2.828. Watch the violation live.

Angle a (°): 0

Angle b (°): 45

Entanglement α: 0.79

S = — | Classical limit = 2 | Quantum max = 2√2 ≈ 2.828