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arXiv · 2002.11779

Condition on the R\'enyi Entanglement Entropy under Stochastic Local Manipulation

Hyukjoon Kwon·A. J. Paige·M. S. Kim
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Abstract

The R\'enyi entanglement entropy (REE) is an entanglement quantifier considered as a natural generalisation of the entanglement entropy. When it comes to stochastic local operations and classical communication (SLOCC), however, only a limited class of the REEs satisfy the monotonicity condition, while their statistical properties beyond mean values have not been fully investigated. Here, we establish a general condition that the probability distribution of the REE of any order obeys under SLOCC. The condition is obtained by introducing a family of entanglement monotones that contain the higher-order moments of the REEs. The contribution from the higher-order moments imposes a strict limitation on entanglement distillation via SLOCC. We find that the upper bound on success probabilities for entanglement distillation exponentially decreases as the amount of raised entanglement increases, which cannot be captured from the monotonicity of the REE. Based on the strong restriction on entanglement transformation under SLOCC, we design a new method to estimate entanglement in quantum many-body systems from experimentally observable quantities.

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Hyukjoon Kwon, A. J. Paige, M. S. Kim. 2020-02-26. Condition on the R\'enyi Entanglement Entropy under Stochastic Local Manipulation. https://doi.org/10.1103/physrevlett.125.100502

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