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- W2895069898 abstract "Quantum key distribution (QKD) guarantees the secure communication between legitimate parties with quantum mechanics. High-dimensional QKD (HDQKD) not only increases the secret key rate but also tolerates higher quantum bit error rate (QBER). Many HDQKD experiments have been realized by utilizing orbital-angular-momentum (OAM) photons as the degree of freedom (DOF) of OAM of the photon is a prospective resource for HD quantum information. Here we proposed and realized a HDQKD scheme based on polarization-OAM hybrid states. By utilizing the nonseparable feature of the vector vortex and the polarization-OAM interconversion ability of the q-plate, both the preparation and measurement procedures of the QKD system are simple and stable. Our QKD system achieves $(0.60pm0.06)%$ QBER and $1.849pm0.008$ bits secret key rate per sifted signal for weak coherent light source with decoy method. Our work also reveals that HD quantum information processing can be simplified in some important scenarios by utilizing the nonseparable feature of vector vortex photons." @default.
- W2895069898 created "2018-10-12" @default.
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- W2895069898 date "2018-10-04" @default.
- W2895069898 modified "2023-09-27" @default.
- W2895069898 title "High-dimensional quantum key distribution with twisted photon" @default.
- W2895069898 hasPublicationYear "2018" @default.
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