Heralded amplification of path entangled quantum states
Heralded amplification of path entangled quantum states
Device-independent quantum key distribution (DI-QKD) represents one of the most fascinating challenges in quantum communication, exploiting concepts of fundamental physics, namely Bell tests of nonlocality, to ensure the security of a communication link.This requires the loophole-free violation of a Bell inequality, which is intrinsically difficult due to losses in fibre …