Efficient and economic five-party quantum state sharing of an arbitrary m-qubit state |
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| Authors: | Y B Sheng F G Deng |
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| Institution: | (1) The Key Laboratory of Beam Technology and Material Modification of Ministry of Education, Beijing Normal University, Beijing, 100875, P.R. China;(2) and Department of Material Science and Engineering, Beijing Normal University, Institute of Low Energy Nuclear Physics, Beijing, 100875, P.R. China;(3) Beijing Radiation Center, Beijing, 100875, P.R. China;(4) Department of Physics, Applied Optics Beijing Area Major Laboratory, Beijing Normal University, Beijing, 100875, P.R. China |
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| Abstract: | We present an efficient and economic scheme for five-party quantum
state sharing of an arbitrary m-qubit state with 2m three-particle
Greenberger-Horne-Zeilinger (GHZ) states and three-particle
GHZ-state measurements. It is more convenient than other schemes as
it only resorts to three-particle GHZ states and three-particle
joint measurement, not five-particle entanglements and five-particle
joint measurements. Moreover, this symmetric scheme is in principle
secure even though the number of the dishonest agents is more than
one. Its total efficiency approaches the maximal value. |
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| Keywords: | PACS" target="_blank">PACS 03 67 Hk Quantum communication 03 67 Dd Quantum cryptography |
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