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E91 Entanglement-based Quantum Key Distribution.
Implements the Ekert 1991 (E91) protocol with:
- Generation of Bell |Φ+⟩ pairs
- Depolarizing noise on each qubit
- Alice and Bob measuring in three angles each
- CHSH Bell inequality test (S parameter)
- Key extraction from matching-basis measurements
Under ideal conditions S ≈ 2√2 ≈ 2.828; with sufficient noise S ≤ 2 (classical).
Structs§
- E91Protocol
- E91 entanglement-based QKD protocol.
- E91Result
- Result of running the E91 protocol.