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Entanglement Theory Quantum Correlations Quantum Foundations

Catalyzed entanglement concentration of qubit pairs

arXiv

Authors: Siddhartha Santra, Vladimir S. Malinovsky

Year

2020

Paper ID

22089

Status

Preprint

Abstract Read

~2 min

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Abstract

We analytically obtain the maximum probability of converting a finite number of copies of an arbitrary two-qubit pure state to a single copy of a maximally entangled two-qubit pure state via entanglement assisted local operations and classical communications using a two-qubit catalyst state. We show that the optimal catalyst for this transformation is always more entangled than the initial state but any two-qubit state can act as a (non-optimal) catalyst. Interestingly, the entanglement of the optimal two-qubit catalyst state is shown to decrease with that of the initial state. Entanglement assisted strategies for obtaining multiple Bell states are discussed.

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We analytically obtain the maximum probability of converting a finite number of copies of an arbitrary two-qubit pure state to a single copy of a maximally entangled two-qubit...

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References & Citation Signals

[1] DOI https://doi.org/arXiv:2007.10516 [2] arXiv https://arxiv.org/abs/2007.10516 [3] Publisher https://arxiv.org/abs/2007.10516

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