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Quantum state sharing of an arbitrary m-qudit state with two-qudit entanglements and generalized Bell-state measurements |
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| Authors: | Tie-Jun Wang Hong-Yu Zhou Fu-Guo Deng |
| Affiliation: | a The Key Laboratory of Beam Technology and Material Modification of Ministry of Education, Beijing Normal University, Beijing 100875, People’s Republic of China b Institute of Low Energy Nuclear Physics, Beijing Normal University, Beijing 100875, People’s Republic of China c Department of Material Science and Engineering, Beijing Normal University, Beijing 100875, People’s Republic of China d Beijing Radiation Center, Beijing 100875, People’s Republic of China e Department of Physics, Beijing Normal University, Beijing 100875, People’s Republic of China |
| Abstract: | A scheme for quantum state sharing of an arbitrary m-qudit state is proposed with two-qudit entanglements and generalized Bell-state (GBS) measurements. In this scheme, the sender Alice should perform m two-particle GBS measurements on her 2m qudits, and the controllers also take GBS measurements on their qudits and transfer their quantum information to the receiver with entanglement swapping if the agents cooperate. We discuss two topological structures for this quantum state sharing scheme, a dispersive one and a circular one. The former is better at the aspect of security than the latter as it requires the number of the agents who should cooperate for recovering the quantum secret larger than the other one. |
| Keywords: | 03.67.Hk 03.65.Ud |
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