{
  "id": "1910.13100",
  "version": "v1",
  "published": "2019-10-29T06:07:28.000Z",
  "updated": "2019-10-29T06:07:28.000Z",
  "title": "Subradiance of multilevel fermionic atoms in arrays with filling $n \\geq 2$",
  "authors": [
    "A. Piñeiro Orioli",
    "A. M. Rey"
  ],
  "comment": "15+8 pages, 9 figures",
  "categories": [
    "quant-ph",
    "cond-mat.quant-gas",
    "physics.atom-ph"
  ],
  "abstract": "We investigate the subradiance properties of $n\\geq 2$ multilevel fermionic atoms loaded into the lowest motional level of a single trap (e.g.~a single optical lattice site or an optical tweezer). As pointed out in our previous work [arXiv:1907.05541], perfectly dark subradiant states emerge from the interplay between fermionic statistics and dipolar interactions. While in [arXiv:1907.05541] we focused on the $n=2$ case, here we provide an in-depth analysis of the single-site dark states for generic filling $n$, and show a tight connection between generic dark states and total angular momentum eigenstates. We show how the latter can also be used to understand the full eigenstate structure of the single-site problem, which we analyze numerically. Apart from this, we discuss two possible schemes to coherently prepare dark states using either a Raman transition or an external magnetic field to lift the Zeeman degeneracy. Although the analysis focuses on the single-site problem, we show that multi-site dark states can be trivially constructed in any geometry out of product states of single-site dark states. Finally, we discuss some possible implementations with alkaline-earth(-like) atoms such as $^{171}$Yb or $^{87}$Sr loaded into optical lattices, where they could be used for potential applications in quantum metrology and quantum information.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2019-10-29T06:07:28.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "multilevel fermionic atoms",
      "single-site dark states",
      "subradiance",
      "single-site problem",
      "total angular momentum eigenstates"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 8,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}