Academic bet365 live casino review by doctoral candidates Zhong Hai and Zhao Wei

bet365 live casino review time：2021year12month9日 morning9：00

bet365 live casino review location: Comprehensive Experimental Building of Railway College418

bet365 live casino reviewperson：Zhong Hai

bet365 live casino review Summary:bet365 live casino review merges with classical communication scheme to merge continuous variable bet365 live casino review and classical communication，For the future in existingSimultaneous key distribution and classical communication on optical networks provides an effective method。However, Superimposing a classical signal on a bet365 live casino review signal willIntroduction of noise into the continuous variable bet365 live casino review system greatly reduces the performance of the system。thisbet365 live casino reviewProposed bet365 live casino review encryption based on optical preamplifierKey distribution integrated with classic communication scheme, That is, inserting an optical preamplifier at the receiving end to improve the performance of the system。First,Under the same bit error rate conditionsDown,The amplification of the signal by the optical preamplifier can reduce the requirements for the classical signal modulation amplitude at the transmitter， Thus reducing the classical signal to bet365 live casino review signal’s noise impact;Secondly,The optical preamplifier can compensate for the imperfections of the receiver detector；Again,For the case of local oscillator light,Amplifier alsoCan amplify weak phase reference pulses,Thereby reducing the phase over-noise caused by the reference pulse shot noise。Under the actual achievable system parameters, NumberThe simulation results show that the scheme proposed in this article has a good improvement in security key rate and transmission distance compared with the original scheme，These results indicate that thisThe scheme provides a very effective and practical method for the further development and practical application of bet365 live casino review integrated with classical communication schemes。

bet365 live casino reviewTitle:Underwater link bet365 live casino review and its security

bet365 live casino review time：2021year12month9日 morning10:00

bet365 live casino review location: Comprehensive Experimental Building of Railway College418

bet365 live casino reviewperson：Zhao Wei

bet365 live casino review Summary:In response to the complex composition and special optical properties of seawater，Monte Carlo simulation is a rigorous and flexible method for modeling underwater light propagation。Compared to Beer's law, which considers the linear propagation model and ignores the photon scattering process，The Monte Carlo algorithm creates a complex probability density function based on known individual components，To study different water qualities、Link distance、Channel characteristics under link geometry and transceiver parameters provide a feasible approach。Compared to the model in Beer’s Law，The Monte Carlo method comprehensively considers the dynamic process of scattered photons，is an effective underwater channel simulation method。This bet365 live casino review is based on Monte Carlo simulation，Proposed an underwater link quantum key distributionAgreement。Considering that the channel transmittance of the underwater link will be significantly lower than the channel transmittance of the optical fiber channel，ThereforeUse multimodal and non-Gaussian operations to improve system performance。On the one hand，Multimodality allows higher bet365 live casino review channel capacity；On the other hand，Non-Gaussian operations enhance the light field intensity of the bet365 live casino review system without changing the basic properties of the original bet365 live casino review system，Has the dual effects of simplifying the topology of bet365 live casino review systems and improving performance。