{
  "id": "cond-mat/0210498",
  "version": "v1",
  "published": "2002-10-22T16:54:45.000Z",
  "updated": "2002-10-22T16:54:45.000Z",
  "title": "Shot noise for entangled and spin-polarized electrons",
  "authors": [
    "J. C. Egues",
    "P. Recher",
    "D. S. Saraga",
    "V. N. Golovach",
    "G. Burkard",
    "E. V. Sukhorukov",
    "D. Loss"
  ],
  "comment": "35 Kluwer pages, 12 figures - to appear in an upcoming NATO SERIES volume on noise",
  "journal": "NATO Science Series, \"Quantum Noise in Mesoscopic Physics\", vol. 97, pp 241-274, Kluwer, 2003, The Netherlands",
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "We review our recent contributions on shot noise for entangled electrons and spin-polarized currents in novel mesoscopic geometries. We first discuss some of our recent proposals for electron entanglers involving a superconductor coupled to a double dot in the Coulomb blockade regime, a superconductor tunnel-coupled to Luttinger-liquid leads, and a triple-dot setup coupled to Fermi leads. We calculate current and shot noise for spin-polarized currents and entangled/unentangled electron pairs in a beam-splitter geometry with a \\textit{local} Rashba spin-orbit (s-o) interaction in the incoming leads. We find \\textit{continuous} bunching and antibunching behaviors for the \\textit{entangled} pairs -- triplet and singlet -- as a function of the Rashba rotation angle. In addition, we find that unentangled triplets and the entangled one exhibit distinct shot noise. Shot noise for spin-polarized currents shows sizable oscillations as a function of the Rashba phase. This happens only for electrons injected perpendicular to the Rashba rotation axis; spin-polarized carriers along the Rashba axis are noiseless. We find an additional spin rotation for electrons with energies near the crossing of the bands where s-o induced interband coupling is relevant. This gives rise to an additional modulation of the noise for both electron pairs and spin-polarized currents. Finally, we briefly discuss shot noise for a double dot near the Kondo regime.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2002-10-22T16:54:45.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "spin-polarized electrons",
      "spin-polarized currents",
      "electron pairs",
      "novel mesoscopic geometries",
      "coulomb blockade regime"
    ],
    "tags": [
      "journal article"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2002cond.mat.10498E"
    }
  }
}