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- W2963161774 abstract "In this paper, we propose a quantum key distribution (QKD) protocol based on the protocol of Bennett in 1992 (Phys Rev Lett, 68 3121, 1992) which utilized the pulse position modulation (PPM) and the orbital angular momentum (OAM) to improve the key rate and increase secure transmission distance. In our protocol, we apply PPM technology to B92 protocol (PPM-B92) to increase the key rate. In general, for an optical pulse with the average photon number μ = 0.1, we know that the empty photons is as high as 90.48%. In our protocol, there is only one time slot with photon pulses, and the photons in the pulses carry the log2 M bit information, so the key rate is improved. Bob only modulates the legal time slots to improve the efficiency of the protocol. Secondly, we apply orbital angular momentum (OAM) to the PPM-B92 protocol (PPM-OAM-B92) to increase secure transmission. OAM has rotation invariance, which solves the dependence of base. Through the MATLAB simulation results, we can see that the key rate of the PPM-B92 protocol is always higher than B92's. The PPM-OAM-B92 protocol can accommodate channel transmission loss up to 29dB." @default.
- W2963161774 created "2019-07-30" @default.
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- W2963161774 date "2019-05-17" @default.
- W2963161774 modified "2023-09-24" @default.
- W2963161774 title "The improved protocol based on the Bennett 92 protocol" @default.
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- W2963161774 doi "https://doi.org/10.1145/3321408.3326689" @default.
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