| Two-way quantum teleportation,an important branch of quantum teleportation,has been always attracted attention.In two-way quantum teleportation,the quantum states transmitted by both parties are mostly symmetrical.the symmetrical quantum states are difficult to obtain Because of the noise.Therefore,it is necessary to discuss the case that the teleportation state is asymmetric.In this article,we studied the related issues of asymmetric controlled teleportation.The main contents are as follows:1.Two asymmetric controlled teleportation protocols were designed that used different channels.the protocols were based on the maximum entangled state of asymmetric controlled teleportation and optimization research.Firstly,the asymmetric controlled teleportation used(2n+2m+1)particle state as channel completed the quantum task with a certain probability under the action of the controller.Secondly,it was required that a seven-particle state as the channel when n= 1,m= 2.For this situation,we could reduce the number of particles in the channel,for example,the five-particle entangled state could also achieve the quantum task.After calculation,the transmission efficiency of five-particle entangled state as the channel was higher than that of seven-particle state,it optimized the protocol.2.Control force and noise analysis in asymmetric controlled teleportation.We analyzed the control force of the control particles and proved that this protocol was truly controlled based on the specific protocol.The influence of amplitude damping and phase damping noise on this protocol was further discussed,which analyzed the trend of the information lost by the protocol with the noise factor in a single noise environment;The relationship between fidelity and the proportion of two noise factors was obtained to get the direction against noise in a mixed noise environment. |
