{
  "id": "1808.07527",
  "version": "v1",
  "published": "2018-08-22T19:09:10.000Z",
  "updated": "2018-08-22T19:09:10.000Z",
  "title": "Dephasing of InAs quantum dot p-shell excitons using two-dimensional coherent spectroscopy",
  "authors": [
    "Takeshi Suzuki",
    "Rohan Singh",
    "Galan Moody",
    "Marc Aßmann",
    "Manfred Bayer",
    "Arne Ludwig",
    "Andreas D. Wieck",
    "and Steven T. Cundiff"
  ],
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "The dephasing mechanisms of p-shell and s-shell excitons in an InAs self-assembled quantum dot ensemble are examined using two-dimensional coherent spectroscopy (2DCS). 2DCS provides a comprehensive picture of how the energy level structure of dots affects the exciton dephasing rates and recombination lifetimes. We find that at low temperatures, dephasing of s-shell excitons is lifetime limited, whereas p-shell excitons exhibit significant pure dephasing due to scattering between degenerate spin states. At elevated temperatures, quadratic exciton-phonon coupling plays an important role in both s-shell and p-shell exciton dephasing. We show that multiple p-shell states are also responsible for stronger phonon dephasing for these transitions",
  "revisions": [
    {
      "version": "v1",
      "updated": "2018-08-22T19:09:10.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "inas quantum dot p-shell excitons",
      "two-dimensional coherent spectroscopy",
      "self-assembled quantum dot ensemble"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}