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Entanglement purification of multi-mode quantum states

J Clausen·L Knoell·D-G Welsch
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Abstract

An iterative random procedure is considered allowing an entanglement purification of a class of multi-mode quantum states. In certain cases, a complete purification may be achieved using only a single signal state preparation. A physical implementation based on beam splitter arrays and non-linear elements is suggested. The influence of loss is analyzed in the example of a purification of entangled N-mode coherent states.

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J Clausen, L Knoell, D-G Welsch. 2003-02-12. Entanglement purification of multi-mode quantum states. https://doi.org/10.1088/1464-4266/5/6/004

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