Show simple item record 2021-06-08T16:11:30Z 2021-06-08T16:11:30Z
dc.title One-body entanglement as a quantum resource in fermionic systems en
dc.type Artículo es
dcterms.abstract We show that one-body entanglement, which is a measure of the deviation of a pure fermionic state from a Slater determinant (SD) and is determined by the mixedness of the single-particle density matrix (SPDM), can be considered as a quantum resource. The associated theory has SDs and their convex hull as free states, and number conserving fermion linear optics operations (FLO), which include one-body unitary transformations and measurements of the occupancy of single-particle modes, as the basic free operations. We first provide a bipartitelike formulation of one-body entanglement, based on a Schmidt-like decomposition of a pure Nfermion state, from which the SPDM [together with the (N − 1)-body density matrix] can be derived. It is then proved that under FLO operations the initial and postmeasurement SPDMs always satisfy a majorization relation, which ensures that these operations cannot increase, on average, the one-body entanglement. It is finally shown that this resource is consistent with a model of fermionic quantum computation which requires correlations beyond antisymmetrization. More general free measurements and the relation with mode entanglement are also discussed. en
dcterms.issued 2020-10-26
dcterms.language Inglés es
dcterms.license Attribution-NonCommercial-NoDerivatives 4.0 Internacional es
dcterms.subject Quantum entanglement en
dcterms.subject Fermionic systems en
dcterms.subject Quantum resource theories en
cic.version info:eu-repo/semantics/submittedVersion es Gigena, Nicolás es Di Tullio, Marco es Rossignoli, Raúl Dante es
cic.lugarDesarrollo Universidad Nacional de La Plata es
dcterms.subject.materia Ciencias Físicas es
dcterms.identifier.url Recurso completo es
dcterms.isPartOf.issue vol. 102 es
dcterms.isPartOf.series Physical Review A es
cic.isPeerReviewed true es
cic.isFulltext true es


  • Icon

    Documento completo 

    PDF file (365.7Kb)

  • This item appears in the following Collection(s)

    Show simple item record