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arXiv · 1204.2077

Production of entanglement with highly-mixed states

Minsu Kang·M. S. Kim·Hyunseok Jeong
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Abstract

We study production of entanglement with highly-mixed states. We find that entanglement between highly mixed states can be generated via a direct unitary interaction even when both states have purities arbitrarily close to zero. This indicates that purity of a subsystem is not required for entanglement generation. Our result is in contrast to previous studies where the importance of the subsystem purity was emphasized.

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Minsu Kang, M. S. Kim, Hyunseok Jeong. 2012-04-10. Production of entanglement with highly-mixed states. https://doi.org/10.1103/physreva.85.044301

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