BCS-like modewise entanglement of fermion Gaussian states

Alonso Botero, Benni Reznik

Research output: Contribution to journalArticlepeer-review

36 Scopus citations


We show that with respect to any bipartite division of modes, pure fermion Gaussian states display the same type of structure in its entanglement of modes as that of the BCS wave function, namely, that of a tensor product of entangled two-mode squeezed fermion states. We show that this structure applies to a wider class of "isotropic" mixed fermion states, for which we derive necessary and sufficient conditions for mode entanglement.

Original languageEnglish
Pages (from-to)39-44
Number of pages6
JournalPhysics Letters, Section A: General, Atomic and Solid State Physics
Issue number1-2
StatePublished - 11 Oct 2004


FundersFunder number
Departamento Administrativo de Ciencia, Tecnología e Innovación (COLCIENCIAS)
Israel Science Foundation62/01-1


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