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arXiv · 1601.05980

Efficient entanglement purification for polarization logic Bell state with the photonic Faraday rotation

Lan Zhou·Yu-Bo Sheng
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Abstract

Logic-qubit entanglement is a promising resource in quantum information processing, especially in future large-scale quantum networks. In the paper, we put forward an efficient entanglement purification protocol (EPP) for nonlocal mixed logic entangled states with the bit-flip error in the logic qubits of the logic Bell state, resorting to the photon-atom interaction in low-quality (Q) cavity and atomic state measurement. Different from existing EPPs, this protocol can also purify the logic phase-flip error, and the bit-flip error and the phase-flip error in physic qubit. During the protocol, we only require to measure the atom states, and it is useful for improving the entanglement of photon systems in future large-scale quantum networks.

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Lan Zhou, Yu-Bo Sheng. 2016-01-22. Efficient entanglement purification for polarization logic Bell state with the photonic Faraday rotation. https://arxiv.org/abs/1601.05980

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