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Copying of entangled states and the degradation of correlations

Pawel Masiak·Peter L. Knight
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Abstract

We investigate the degree to which entanglement survives when a correlated pair of two-state systems are copied using either local or non-local processes. We show how the copying process degrades the entanglement, due to a residual correlation between the copied output and the copying machine (itself made of qubits).

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Pawel Masiak, Peter L. Knight. 1998-08-24. Copying of entangled states and the degradation of correlations. https://doi.org/10.1002/1521-3978(200110)49%3A10%2F11%3C1001%3A%3Aaid-prop1001%3E3.0.co%3B2-b

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