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Efficient Multiparty-to-Multiparty Quantum Secret Sharing via Continuous Variable Operations |
| HAN Lian-Fang1;LIU Yi-Min2;YUAN Hao1;ZHANG Zhan-Jun1 |
| 1Key Laboratory of Optoelectronic Information Acquisition and Manipulation of Ministry of Education of China, School of Physics and Material Science, Anhui University, Hefei 2300392Department of Physics, Shaoguan University, Shaoguan 512005 |
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| Cite this article: |
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HAN Lian-Fang, LIU Yi-Min, YUAN Hao et al 2007 Chin. Phys. Lett. 24 3312-3315 |
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Abstract sharing scheme [Phys. Rev. A 71(2005)044301] proposed recently is extended to a multiparty-to-multiparty case. Furthermore, the continuous variable operations are employed in the extended scheme to replace the specific discrete unitary operations used in the original scheme. The complete randomicity of the continuous variable characterizing the unitary operations can ensure the security of secret sharing. Moreover, the present scheme is compared with the recent similar scheme [Phys. Rev. A 72(2005)012304]. It is found that the efficiency of the present scheme is n times of that of the previous one.
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| Keywords:
03.67.Hk
03.67.Dd
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Received: 30 August 2007
Published: 03 December 2007
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| PACS: |
03.67.Hk
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(Quantum communication)
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03.67.Dd
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(Quantum cryptography and communication security)
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