Quantum secret sharing for edge computing security using locally distinguishable eight-qudit entangled states

Maintaining confidentiality and reliability in distributed quantum environments remains a significant challenge. To this end, we propose a quantum secret sharing (QSS) scheme based on the local distinguishability of orthogonal eight-qudit entangled states. Compared to the previous seven-particle model, this scheme significantly expands the quantum state space, enhances security, and improves flexibility. We systematically construct 22 types of eight-qudit entangled states, define their corresponding judgment spaces, and introduce a new distinction rule to simplify the local discrimination process. Based on this framework, we develop a general ( k , n )-threshold quantum synchronization sharing protocol and verify its effectiveness using a (7, 8)-threshold example on the IBM Qiskit platform. Results show that this scheme is resilient to multiple attack types and provides a scalable approach for secure quantum information sharing in future distributed quantum systems, with potential applications in fields such as quantum-enhanced edge computing.