Perceiving Quantum Hacking for Quantum Key Distribution Using Temporal Ghost Imaging

Quantum key distribution (QKD) can generate secure bits between remote users with quantum mechanics. However, the gap theoretical model and practical realizations gives eavesdroppers opportunities to intercept secret key. The most insidious attacks, known as hacking, are ones no significant discrepancy of measurement results using side-channel loopholes QKD systems. Depicting full-time-scale characteristics signals, channel, system provide legitimate extra capabilities defeat malicious attacks. For first time, we propose method exploring temporal ghost imaging (TGI) scheme perceive hacking fingerprints experimentally verify its validity. presents a common approach promote QKD's security from new perspective signals