{
  "id": "1707.01206",
  "version": "v1",
  "published": "2017-07-05T03:33:06.000Z",
  "updated": "2017-07-05T03:33:06.000Z",
  "title": "Weak-Light Nonlinearity Using a Dark State in Coupled Quantum Dots",
  "authors": [
    "Nobuhiko Yokoshi",
    "Hajime Ishihara"
  ],
  "comment": "4 pages, 3 figures",
  "journal": "J. Phys. Soc. Jpn. 86, 083401 (2017)",
  "doi": "10.7566/JPSJ.86.083401",
  "categories": [
    "cond-mat.mes-hall",
    "quant-ph"
  ],
  "abstract": "We propose a scheme to induce weak-light nonlinearity in a double quantum dot. The scheme positively utilizes locality and dissipation of an external auxiliary system. As a plausible setup, we consider a complex system in which a localized plasmon field from a metallic nanotip couples with only one of the coupled quantum dots. The perturbative calculation with respect to the light intensity shows that, even by a sufficiently weak light, a dipole-forbidden two-exciton NOON state is prepared as the steady state. This result can be explained by combining the two factors: decoherence-induced quantum state preparation and two-photon resonance. The present work implies that the positive usage of both the locality and the dissipation in the external auxiliary system is promising for inducing two-photon processes effectively, and provides one guideline to weak-light nonlinearities.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2017-07-05T03:33:06.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "coupled quantum dots",
      "dark state",
      "external auxiliary system",
      "dipole-forbidden two-exciton noon state",
      "decoherence-induced quantum state preparation"
    ],
    "tags": [
      "journal article"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 4,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}