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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

Published Sep 21, 2012• 1 citation

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.

DOI: 10.48550/arxiv.1209.4732

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