Experimental Phase-Matching Quantum Key Distribution without Intensity Modulation. (arXiv:2303.11585v1 [quant-ph])

Quantum key distribution provides a promising solution for sharing secure
keys between two distant parties with unconditional security. Nevertheless,
quantum key distribution is still severely threatened by the imperfections of
devices. In particular, the classical pulse correlation threatens security when
sending decoy states. To address this problem and simplify experimental
requirements, we propose a phase-matching quantum key distribution protocol
without intensity modulation. Instead of using decoy states, we propose a novel
method to estimate the theoretical upper bound on the …

address correlation decoy devices distribution key keys problem protocol pulse quantum quantum key distribution requirements secure keys security sharing simplify solution states