{
  "id": "2407.17309",
  "version": "v1",
  "published": "2024-07-24T14:22:47.000Z",
  "updated": "2024-07-24T14:22:47.000Z",
  "title": "Photonic \"hourglass\" design beyond the standard bulk model of phonon decoherence",
  "authors": [
    "José Ferreira Neto",
    "Benedek Gaál",
    "Luca Vannucci",
    "Niels Gregersen"
  ],
  "comment": "7 pages, 5 figures",
  "categories": [
    "quant-ph",
    "cond-mat.mes-hall"
  ],
  "abstract": "We study the impact of mechanical vibrations on the performance of the photonic \"hourglass\" structure, which is predicted to emit single photons on-demand with near-unity efficiency and indistinguishability. Previous investigations neglected the impact of vibrational modes inherent to this quasi-1D geometry, relying instead on a three-dimensional bulk assumption for the phonon modes. However, it has been shown that phonon decoherence has a much stronger impact in 1D structures as compared with bulk media. Here, we surprisingly demonstrate the robustness of the photonic hourglass design, achieving close-to-unity indistinguishability even by incorporating a detailed description of the vibrational modes. We explain this unexpected result in terms of the large Purcell enhancement of the hourglass single-photon source, which eliminates the negative effect of phonons. Our findings highlight the key role of high-Q optical cavities in mitigating the detrimental effect of phonon decoherence, even for structures of reduced dimensionality.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2024-07-24T14:22:47.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "phonon decoherence",
      "standard bulk model",
      "emit single photons on-demand",
      "vibrational modes inherent",
      "hourglass single-photon source"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 7,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}