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arXiv quant-ph/0105096quant-ph
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使用三个量子比特的量子密集编码

Quantum dense coding using three qubits

Jose L. Cereceda

摘要:

我们考虑一种情况,其中两方,爱丽丝和鲍勃,共享一个3量子比特系统耦合在一个初始的最大纠缠,GHZ状态。通过在本地操作两个量子位,爱丽丝可以准备八个3量子位GHZ状态中的任何一个。因此,爱丽丝的两个量子比特发送给鲍勃,需要3比特的经典信息,鲍勃可以通过区分八个(正交)GHZ状态的测量来恢复这些信息。这与2量子比特的情况形成对比,在这种情况下,爱丽丝可以通过只对其中一个量子比特进行局部作用来准备四个贝尔态中的任何一个。

英文摘要:

We consider a situation in which two parties, Alice and Bob, share a 3-qubit system coupled in an initial maximally entangled, GHZ state. By manipulating locally two of the qubits, Alice can prepare any one of the eight 3-qubit GHZ states. Thus the sending of Alice's two qubits to Bob, entails 3 bits of classical information which can be recovered by Bob by means of a measurement distinguishing the eight (orthonormal) GHZ states. This contrasts with the 2-qubit case, in which Alice can prepare any of the four Bell states by acting locally only on one of the qubits.

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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