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arXiv · 1209.4732

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
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Abstract

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.

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Hai-Rui Wei, Bao-Cang Ren, Mei Zhang, Tao Li, Fu-Guo Deng. 2012-09-21. Complete deterministic multi-electron Greenberger-Horne-Zeilinger state analyzer for quantum communication. https://arxiv.org/abs/1209.4732

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