TY - JOUR
T1 - BCS-like modewise entanglement of fermion Gaussian states
AU - Botero, Alonso
AU - Reznik, Benni
N1 - Funding Information:
A.B. acknowledges support from Colciencias (contract 1204-05-13622). B.R. acknowledges the support of ISF grant 62/01-1.
PY - 2004/10/11
Y1 - 2004/10/11
N2 - 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.
AB - 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.
UR - https://www.scopus.com/pages/publications/4644324255
U2 - 10.1016/j.physleta.2004.08.037
DO - 10.1016/j.physleta.2004.08.037
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AN - SCOPUS:4644324255
SN - 0375-9601
VL - 331
SP - 39
EP - 44
JO - Physics Letters, Section A: General, Atomic and Solid State Physics
JF - Physics Letters, Section A: General, Atomic and Solid State Physics
IS - 1-2
ER -