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arXiv · 1605.04633

Distillation of logic-qubit entanglement assisted with cross-Kerr nonlinearity

Yu-Bo Sheng·Lan Zhou
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Abstract

Logic-qubit entanglement has attracted much attention in both quantum communication and quantum computation. Here, we present an efficient protocol to distill the logic-qubit entanglement with the help of cross-Kerr nonlinearity. This protocol not only can purify the logic bit-flip error and logic phase-flip error, but also can correct the physical bit-flip error completely. We use cross-Kerr nonlinearity to construct quantum nondemolition detectors. Our distillation protocol for logic-qubit entanglement may be useful for the practical applications in quantum information, especially in long-distance quantum communication.

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Yu-Bo Sheng, Lan Zhou. 2016-05-16. Distillation of logic-qubit entanglement assisted with cross-Kerr nonlinearity. https://arxiv.org/abs/1605.04633

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