{
  "id": "2002.10106",
  "version": "v1",
  "published": "2020-02-24T07:54:46.000Z",
  "updated": "2020-02-24T07:54:46.000Z",
  "title": "High-quality photonic entanglement based on a silicon chip",
  "authors": [
    "Dorian Oser",
    "Sébastien Tanzilli",
    "Florent Mazeas",
    "Carlos Alonso-Ramos",
    "Xavier Le Roux",
    "Grégory Sauder",
    "Xin Hua",
    "Olivier Alibart",
    "Laurent Vivien",
    "Éric Cassan",
    "Laurent Labonté"
  ],
  "comment": "11 pages, 6 figures",
  "categories": [
    "quant-ph",
    "physics.optics"
  ],
  "abstract": "The fruitful association of quantum and integrated photonics holds the promise to produce, manipulate, and detect quantum states of light using compact and scalable systems. Integrating all the building-blocks necessary to produce high-quality photonic entanglement in the telecom wavelength range out of a single chip remains a major challenge, mainly due to the limited performance of on-chip light rejection filters. We report a stand-alone, telecom-compliant, device that integrates, on a single substrate, a nonlinear photon-pair generator and a passive pump rejection filter. Using standard channel-grid fiber demultiplexers, we demonstrate the first entanglement quantification of such a integrated circuit, showing the highest raw quantum interference visibility for energy-time entangled photons over two telecom-wavelength bands. Genuinely pure maximally entangled states can therefore be generated thanks to the high-level of noise suppression obtained with the pump filter. These results will certainly further promote the development of more advanced and scalable photonic-integrated quantum systems compliant with telecommunication standards.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2020-02-24T07:54:46.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "silicon chip",
      "photonic-integrated quantum systems compliant",
      "pure maximally entangled states",
      "highest raw quantum interference visibility",
      "on-chip light rejection filters"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 11,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}