# Quantifying Entanglement

@inproceedings{Vedral1997QuantifyingE, title={Quantifying Entanglement}, author={Vlatko Vedral and Martin Bodo Plenio and Markus Rippin and P. L. Knight}, year={1997} }

We have witnessed great advances in quantum information theory in recent years. There are two distinct directions in which progress is currently being made: quantum computation and error correction on the one hand (for a short survey see [1,2]) and non–locality, Bell’s inequalities and purification on the other hand [3,4]. There has also been a number of papers relating the two (e.g. [5,6]). Our present work belongs to this second group. Recently it was realised that the CHSH (Clauser…

## 1,238 Citations

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It is shown that for protocols that first distill private states, it is essentially optimal to use the standard quantum repeater protocol based on entanglement distillation and entanglements swapping, a setting called the quantum key repeater.

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A new approach to the analysis of entanglement, especially in continuous-variable states, is introduced and it is shown that it leads to the first systematic quantification of the (local)Entanglement in arbitrary bipartite non-Gaussian states.

### Quantifying Entanglement

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Since the revolutionary EPR-Bohm thought experiment, researchers inspired by Bell’s theorem have been experimentally generating and employing nonclassical correlations in the laboratory. Recently, on…

### Quantifying quantum coherence with quantum Fisher information

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It is verified that the well-known quantum Fisher information (QFI) can be utilized to quantify the quantum coherence, as it satisfies the monotonicity under the typical incoherent operations and the convexity under the mixing of the quantum states.

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