Entanglement Capability of Two-qubit Operations

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Kraus, B.; Dür, W.; Vidal, G.; Cirac, J.I.; Lewenstein, M. et al.: Entanglement Capability of Two-qubit Operations. In: Zeitschrift für Naturforschung - Section A Journal of Physical Sciences 56 (2001), Nr. 1-2, S. 91-99. DOI: https://doi.org/10.1515/zna-2001-0114

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Abstract: 
We study the optimal way of creating bi-partite entanglement using a general two-qubit interaction. On the one hand, we analyze the entanglement capability of an arbitrary non-local Hamiltonian acting on two qubits. We explicitly calculate the state which maximizes the entanglement produced per time step δt during the non-local evolution. On the other hand, we determine the maximal amount of entanglement which can be produced by an arbitrary two-qubit gate. We also give the separable state which leads to the output state containing this amount of entanglement. Furthermore, we consider the situation where auxiliary systems are present. Finally, we determine the non-unitary processes which are able to create entanglement from an initially separable state of two systems.
License of this version: CC BY-NC-ND 3.0
Document Type: article
Publishing status: publishedVersion
Issue Date: 2001
Appears in Collections:Fakultät für Mathematik und Physik

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1 image of flag of Germany Germany 36 97.30%
2 image of flag of India India 1 2.70%

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