A Novel Quantum Visual Secret Sharing Scheme

Abstract

Inspired by Naor et al.'s visual secret sharing (VSS) scheme, a novel n out\nof n quantum visual secret sharing (QVSS) scheme is proposed, which consists of\ntwo phases: sharing process and recovering process. In the first process, the\ncolor information of each pixel from the original secret image is encoded into\nan n-qubit superposition state by using the strategy of quantum expansion\ninstead of classical pixel expansion, and then these n qubits are distributed\nas shares to n participants, respectively. During the recovering process, all\nparticipants cooperate to collect these n shares of each pixel together, then\nperform the corresponding measurement on them, and execute the n-qubit XOR\noperation to recover each pixel of the secret image. The proposed scheme has\nthe advantage of single-pixel parallel processing that is not available in the\nexisting analogous quantum schemes and perfectly solves the problem that in the\nclassic VSS schemes the recovered image has the loss in resolution. Moreover,\nits experiment implementation with the IBM Q is conducted to demonstrate the\npractical feasibility.\n