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arXiv 1209.4732quant-ph
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用于量子通信的完全确定性多电子Greenberger-Horne-Zeilinger态分析器

Complete deterministic multi-electron Greenberger-Horne-Zeilinger state analyzer for quantum communication

Hai-Rui Wei, Bao-Cang Ren, Mei Zhang, Tao Li, Fu-Guo Deng

摘要:

提出了一种利用微腔中量子点中探测光子的偏振态与电子自旋之间的界面来实现多电子Greenberger-Horne-Zeilinger(GHZ)态分析器的方案.利用单光子探测器和线性光学元件可以完全分辨出所有的多自旋GHZ态。我们的方案有一些特点。首先,它是一个完整的多电子自旋系统的GHz态分析器。第二,初始纠缠态在被识别后仍然存在,它们可以用于后续任务。第三,电子量子比特是静态的,光子起着信息传递的介质的作用,这在量子中继器中有很好的应用,其中电子量子比特用于存储信息,光子量子比特用于在其他量子比特之间传递信息。

英文摘要:

We present a scheme for the multi-electron Greenberger-Horne-Zeilinger (GHZ) state analyzer, resorting to an interface between the polarization of a probe photon and the spin of an electron in a quantum dot embedded in a microcavity. All the multi-spin GHZ states can be completely discriminated by using single-photon detectors and linear optical elements. Our scheme has some features. First, it is a complete GHZ-state analyzer for multi-electron spin systems. Second, the initial entangled states remain after being identified and they can be used for a successive task. Third, the electron qubits are static and the photons play a role of a medium for information transfer, which has a good application in quantum repeater in which the electron qubits are used to store the information and the photon qubits are used to transfer the information between others.

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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