| 基于混合纠缠态的概率超密编码 |
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| 引用本文： | 毛多鹭,李得超.基于混合纠缠态的概率超密编码[J].量子光学学报,2011,17(1). |
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| 作者姓名： | 毛多鹭 李得超 |
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| 作者单位： | 1. 青海民族大学物理与电子信息工程学院,青海,西宁,810007
2. 西北工业大学自动化学院,陕西,西安,710062 |
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| 摘 要： | 在理想的超密编码方案中,发送方凭借一个和接收方共享的最大纠缠纯态,可用传送一量子比特来实现传送两经典比特的信息.本文提出了一个凭借混合纠缠态的超密编码方案,并分析了该方案成功传送信息的概率上界.进一步讨论了该类超密编码的通信容量.
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| 关 键 词： | 超密编码 混合纠缠态 Holevo界 信道容量 |
Probabilistic Superdense Coding with Mixed Entangled State |
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| MAO Duo-lu,LI De-chao.Probabilistic Superdense Coding with Mixed Entangled State[J].Acta Sinica Quantum Optica,2011,17(1). |
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| Authors: | MAO Duo-lu LI De-chao |
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| Institution: | MAO Duo-lu1,LI De-chao2(1.School of Physics and Electronic Information Engineering,Qinghai University for Nationalities,Xining 810007,China,2.College of Automation,Northwestern Polytechnical University,Xi'an 710062,China) |
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| Abstract: | Ideal dense coding protocols allow one to use prior maximal entanglement to send two bits of classical information by the physical transfer of a single encoded qubit.We investigate the case in which the prior entanglement is not maximal and the initial state of the entangled pair of qubits being used for the dense coding is a mixed state.The upper bound on the probability to do dense coding is analyzed,and then the capability of dense coding is investigated. |
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| Keywords: | probabilistic superdense coding mixed entangled state holevo quantity channel capability |
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