Decoy State Quantum Key Distribution With Modified Coherent State
arXiv:0704.3833 · doi:10.1103/PhysRevA.76.014304
Abstract
To beat PNS attack, decoy state quantum key distribution (QKD) based on coherent state has been studied widely. We present a decoy state QKD protocol with modified coherent state (MCS). By destruction quantum interference, MCS with fewer multi-photon events can be get, which may improve key bit rate and security distance of QKD. Through numerical simulation, we show about 2-dB increment on security distance for BB84 protocol.
4 pages, 4 figures
References in corpus (7)
- Quantum key distribution over 122 km of standard telecom fiber
- Experimental Long-Distance Decoy-State Quantum Key Distribution Based On Polarization Encoding
- Long distance decoy state quantum key distribution in optical fiber
- Improved practical decoy state method in quantum key distribution with parametric down conversion source
- Secure and efficient decoy-state quantum key distribution with inexact pulse intensities
- Simple protocol for secure decoy-state quantum key distribution with a loosely controlled source
- Photon-number-solving Decoy State Quantum Key Distribution