0409140v1

related topics
{state, states, entangled}
{entanglement, phys, rev}
{measurement, state, measurements}
{energy, gaussian, time}
{state, states, coherent}
{let, theorem, proof}
{information, entropy, channel}
{alice, bob, state}
{operator, operators, space}

Separability Criteria from Uncertainty Relations

Otfried Guehne, Maciej Lewenstein

abstract: We explain several separability criteria which rely on uncertainty relations. For the derivation of these criteria uncertainty relations in terms of variances or entropies can be used. We investigate the strength of the separability conditions for the case of two qubits and show how they can improve entanglement witnesses.

oai_identifier:
oai:arXiv.org:quant-ph/0409140
categories:
quant-ph
comments:
4 pages, 2 figures, contribution for the proceedings of QCMC 2004 in Glasgow
doi:
10.1063/1.1834422
arxiv_id:
quant-ph/0409140
journal_ref:
AIP Conf. Proc. 734, 230 (2004).
created:
2004-09-21

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