A Novel Quantum Visual Secret Sharing Scheme
Wenjie Liu, Yinsong Xu, Maojun Zhang, Junxiu Chen, and Ching-Nung Yang

TL;DR
This paper introduces a new quantum visual secret sharing scheme that encodes pixel information into n-qubit states, enabling parallel processing and lossless image recovery, with experimental validation on IBM Q.
Contribution
It proposes a novel n out of n quantum VSS scheme using quantum expansion, improving resolution and enabling parallel processing, validated through IBM Q experiments.
Findings
Achieves lossless image recovery with quantum encoding.
Enables single-pixel parallel processing.
Demonstrates practical feasibility via IBM Q implementation.
Abstract
Inspired by Naor et al.'s visual secret sharing (VSS) scheme, a novel n out of n quantum visual secret sharing (QVSS) scheme is proposed, which consists of two phases: sharing process and recovering process. In the first process, the color information of each pixel from the original secret image is encoded into an n-qubit superposition state by using the strategy of quantum expansion instead of classical pixel expansion, and then these n qubits are distributed as shares to n participants, respectively. During the recovering process, all participants cooperate to collect these n shares of each pixel together, then perform the corresponding measurement on them, and execute the n-qubit XOR operation to recover each pixel of the secret image. The proposed scheme has the advantage of single-pixel parallel processing that is not available in the existing analogous quantum schemes and…
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