Design And Analysis Of Quantum Teleportation Circuit

Quantum teleportation is the preliminarily established classical quantum channel,and then through a certain quantum operation,the quantum state of the particle to be transmitted is transferred to the particle at the other end of the quantum channel by the common action of the classical channel and the quantum channel.Transmitting is the simplest type of quantum communication technology.Engaging in quantum teleportation experiments is a precondition study for the feasibility of a global quantum communication network.In addition,quantum communication has the ability to transmit confidentiality,protects information security,and has important significance for national security.Because quantum has the characteristic that it can not be divided and cannot be duplicated,if it is interfered with in transmission,it will change the state and the receiving party can discover it.In other words,in addition to the premise of protecting communication security,quantum communication also has the function of “anti-eavesdropping”.If someone eavesdrops,the information is changed by eavesdropping so that the content can be kept secret.Experimenting on quantum teleportation is also one of the tasks of China’s Mozo experimental satellite.This paper mainly analyzes the anti-interference ability of quantum teleportation lines,and optimizes the generalized GHZ states to participate in quantum teleportation circuits.The main contents of this paper are divided into three parts:(1)Designing the corresponding single-bit quantum teleportation lines with four EPR states as quantum channels,and then analyzing the relationship between the EPR quantum channels and the quantum operation gates performed by the information receivers in the four lines.According to the relationship,a single-bit quantum teleportation universal circuit is designed.(2)Extend the single-bit standard quantum teleportation line to the two-bit quantum teleportation,and use Mathematica to verify the correctness of the quantum circuit.When the correctness of the two-bit quantum teleportation line is verified,Then,in the same way,the circuit is extended to the general N-bit quantum teleportation state,thereby obtaining an arbitrary N-bit quantum stealth transmission line.Then,the single-bit quantum teleportation universal line and any N-bit quantum teleportation line are fused to design the final arbitrary N-bit quantum stealth transmission universal line.(3)In the quantum teleportation of the non-maximum generalized three-particle GHZ state,randomly select any two generalized four-particle GHZ states as quantum channels,analyze the unitary transformation of the information receiver,and find that the non-maximum generalized three-particle GHZ The entanglement type of the state is consistent with the entanglement type of the last three particles of the quantum channel,and when the entanglement type of the joint measurement base is consistent with the entanglement type of the first four particles of the initial state,the matrix of the information receiver undergoing the unitary transformation is the simplest and then utilized.The obtained law optimizes the deterministic quantum teleportation and the probability controlled quantum teleportation.The main research results of this paper are as follows: In the universal circuit of quantum teleportation,the information receiver performs a parameterized unitary transformation,in which the parameters are determined by the type of EPR pair prepared.This universal circuit solves the problem of information transmission failure caused by the error of the EPR preparation center.Improve the anti-interference ability of the line;in the quantum teleportation in which the general GHZ states participate,it is pointed out that the optimal GHZ state quantum channel and the appropriate GHZ state measurement basis are selected according to the entanglement type of the non-maximal generalized GHZ state to be transmitted.Perform efficient and invisible transmission.