Multiparty hierarchical quantum-information splitting

作者:Wang, Xin Wen*; Zhang, Deng Yu; Tang, Shi Qing; Xie, Li Jun
来源:Journal of Physics B: Atomic, Molecular and Optical Physics , 2011, 44(3): 035505.
DOI:10.1088/0953-4075/44/3/035505

摘要

We propose a scheme for multiparty hierarchical quantum-information splitting (QIS) with a multipartite entangled state, where a boss distributes a secret quantum state to two grades of agents asymmetrically. The agents who belong to different grades have different authorities for recovering the boss's secret. Except for the boss's Bell-state measurement, no nonlocal operation is involved. The presented scheme is also shown to be secure against eavesdropping. Such a hierarchical QIS is expected to find useful applications in the field of modern multipartite quantum cryptography.