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Quantum dialogue(QD) enables two communication parties to directly exchange secret messages simultaneously. In conventional QD protocols, photons need to transmit in the quantum channel for two rounds. In this paper, we propose a one-step QD protocol based on the hyperentanglement. With the help of the non-local hyperentanglement-assisted Bell state measurement(BSM), the photons only need to transmit in the quantum channel once. We prove that our one-step QD protocol is secure in theory and nume... 相似文献
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