Abstract

Multipartite quantum steering is an essential quantum resource in the process of secure quantum communication. The enhancement of quantum steering is important for specific quantum communication tasks. In this work, we present a quadripartite quantum steering scheme based on correlation injection structure by symmetrical cascaded four-wave-mixing processes and analyze steering properties of different mode combinations. We theoretically prove that for some mode combinations, a correlation injection scheme can enhance the quantum steering under certain conditions, while for other combinations, a correlation injection scheme can decrease the quantum steering under certain conditions. The method offers a reference for the secure quantum information network.

© 2021 Optical Society of America

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