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arXiv quant-ph/0407193quant-ph
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使用多体态的超密集编码

Superdense coding using multipartite states

G. Rigolin

摘要:

我们表明,与四分量子信道用于传送任意两个量子比特的状态,我们可以构建一个超密集的编码协议,它是可能的发送4位的经典信息发送只有2个量子比特。Alice和Bob最初共享一个四量子比特的最大纠缠态,通过本地操作她的两个量子比特,Alice可以生成16个正交的最大纠缠态,这些最大纠缠态用于编码发送给Bob的消息。他通过广义贝尔状态测量读取4位消息。本文还提出了一个广义协议,其中2N比特的经典信息通过N个量子比特传输。我们还证明了这个四(2N-)分通道等价于两(N)个Bell态,从而证明了我们需要两(N)个Bell态来传送一个两(N)量子比特系统.

英文摘要:

We show that with the fourpartite quantum channel used to teleport an arbitrary two qubit state, we can construct a superdense coding protocol where it is possible to transmit 4 bits of classical information sending only 2 qubits. Alice and Bob initially share a four qubit maximally entangled state and by locally manipulating her two qubits Alice can generate 16 orthogonal maximally entangled states, which are used to encode the message transmitted to Bob. He reads the 4 bit message by a generalized Bell state measurement. A generalized protocol in which 2N bits of classical information is transmitted via N qubits is also presented. We also show that this four(2N-)partite channel is equivalent to two(N) Bell states, which proves that we need two(N) Bell states to teleport a two(N) qubit system.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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