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Entanglement in Mesoscopic Structures: Role of Projection | | A. V. Lebedev
; G. Blatter
; C. W. J. Beenakker
; G. B. Lesovik
; | | Date: |
28 Nov 2003 | | Journal: | Phys.Rev.B 69, 235312 (2004) DOI: 10.1103/PhysRevB.69.235312 | | Subject: | Mesoscopic Systems and Quantum Hall Effect; Strongly Correlated Electrons | cond-mat.mes-hall cond-mat.str-el quant-ph | | Abstract: | We present a theoretical analysis of the appearance of entanglement in non-interacting mesoscopic structures. Our setup involves two oppositely polarized sources injecting electrons of opposite spin into the two incoming leads. The mixing of these polarized streams in an ideal four-channel beam splitter produces two outgoing streams with particular tunable correlations. A Bell inequality test involving cross-correlated spin-currents in opposite leads signals the presence of spin-entanglement between particles propagating in different leads. We identify the role of fermionic statistics and projective measurement in the generation of these spin-entangled electrons. | | Source: | arXiv, cond-mat/0311649 | | Services: | Forum | Review | PDF | Favorites | |
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