Multipartite quantum steering has crucial applications in the field of asymmetric secure quantum networks. In the actual quantum communication transmission process, the inevitable loss and noise in the channels will lead to reduction or even disappearance of quantum steering, which is extremely unfavorable to the transmission of information, so it has important practical significance for research of the revival of quantum steering. We theoretically studied the influence of noise on steering and investigated the revival of quantum steering by correlated noisy channels. The results show that excessive noise can cause sudden death of steering, whereas the disappeared steering can be revived by introducing correlated noise. Simultaneously, we also confirmed that the steerability and direction of steering can be manipulated by changing the transmissivity of the revived beam splitter. Our work provides a feasible reference for secure quantum communication in real noisy environment.

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相关噪声通道中量子转向的复兴

多方量子控制在非对称安全量子网络领域具有至关重要的应用。在实际的量子通信传输过程中，通道中不可避免的损耗和噪声会导致量子转向减弱甚至消失，这对信息的传输极为不利，因此对于量子复兴的研究具有重要的现实意义。操舵。我们从理论上研究了噪声对转向的影响，并研究了相关噪声通道对量子转向的复兴。结果表明，过多的噪声会导致转向突然死亡，而消失的转向可以通过引入相关噪声来恢复。同时地，我们还证实，可以通过改变复兴的分束器的透射率来操纵转向能力和转向方向。我们的工作为真实噪声环境下的安全量子通信提供了可行的参考。