Author(s): Zilin Chen, Jiatong Yu, Fei Lin, and Lixiang Chen Physical matching has long been a cornerstone of secure authentication systems, as exemplified by the Tiger Amulet in ancient military contexts. However, traditional methods are constrained by reliance on tangible objects and the necessity of “localized” matching within physical space. Ghost imaging… [Phys. Rev. Applied 25, 014019] Published Thu Jan 08, 2026