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This research establishes a computational framework that optimizes participant partitioning to reduce network embedding costs for quantum secret sharing by over an order of magnitude. By linking algebraic code properties with physical constraints like qubit routing and scheduling, the work makes scalable, topology-specific quantum cryptography practically viable. This advancement directly addresses the critical bottleneck of communication overhead in deploying real-world quantum networks.

Sursă care acoperăQuantum Zeitgeist

Hamad Bin Khalifa Team Maps Secret Sharing Cost for Quantum Networks

Quantum Zeitgeist5 noiembrie 20263 min de cititArticolul și perspectiva sunt în engleză.

Network embedding costs for quantum secret sharing schemes swing wildly, differing by over ten times depending on how qubits are connected. This work reveals participant partitioning not only enhances data protection but also improves recovery rates within these systems. A new computational framework links code design to real-world network limitations, moving beyond theoretical possibilities towards scalable quantum cryptography.

An exact computational framework for quantum symmetric subspace (QSS) induced by code-switching syndrome (CSS) quasi-cyclic low-density parity-check (qLDPC) codes has been developed. This framework characterizes authorized, forbidden, and intermediate coalitions using restricted parity-check matrices and binary linear algebra. It introduces the accessible logical dimension κ(A), defined through the symplectic rank of locally supported logical classes, to refine the…

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