Device-independent quantum secret sharing with noise preprocessing an‎d postselec‎tion

10/20/2026 12:00:00 AM

In this thesis, we first aim to familiarize ourselves with Device-Independent Quantum Secret Sharing (DI-QSS). Utilizing this approach enables us to minimize security assumptions related to device performance an‎d achieve the highest theoretical security level for QSS. The original DI-QSS protocol has demonstrated its validity under the assumption of measurement device independence; however, its performance characterization in practical communication scenarios has not yet been thoroughly investigated. This gap has impeded its experimental demonstration an‎d practical applications. To address this issue, following an in-depth examination of Device-Independent Quantum Secret Sharing, we propose a tripartite DI-QSS protocol incorporating two strategic enhancements: noise preprocessing an‎d post-selec‎tion. Furthermore, we develop an‎d enhance numerical methods to implement the performance characterization of DI-QSS under realistic communication conditions. The adoption of these two strategies effectively reduces the global detection threshold of DI-QSS while increasing its noise tolerance threshold.

تسهيم راز كوانتومي ، مستقل از دستگاه ، انتخاب پسيني ، پيش‌پردازش نويز ، فوتون هاي درهم تنيده

: QuantumSecretSharing(QSS) ، Device-Independent (DI) ، Post-selec‎tion ، Noise Preprocessing ، Entangled Photons)

DR SAmaneh mashhadi

DR SAmaneh mashhadi