{
  "annotation_id": "17aee675-3d39-4593-a66d-7205201efda9",
  "date_created": "2026-03-02T18:02:37.250000Z",
  "date_modified": "2026-03-02T18:02:37.250000Z",
  "file_hash": "f9b3a198ad6111b305b7d3b3fce6cb9658838a8532d885842a96141a2be66a73",
  "private": false,
  "record": {
    "abstract": "We discuss the conditional preparation of single photons via parametric\ndown-conversion. This technique is commonly used as a single photon source in\nmodern quantum optics experiments. A significant problem facing this technique\nis the inability of present day photo-detectors to resolve photon number. This\nresults in mixing with higher photon number terms. To overcome this several\ntechniques have been proposed, including multi-port detection and time-division\nmultiplexing. These techniques help approximate number resolving detection even\nwhen using non-number resolving detectors. In this paper we focus on 2-port\ndetection, the simplest such scheme. We show that by making the 2-port device\nasymmetric the fidelity of prepared photons can be improved.",
    "arxiv_id": "quant-ph/0703238",
    "authors": [
      "Peter P Rohde"
    ],
    "categories": [
      "quant-ph"
    ],
    "title": "Improving the fidelity of single photon preparation from conditional   down-conversion via asymmetric multiport detection",
    "url": "https://arxiv.org/abs/quant-ph/0703238"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "dfc2ce4f-5e3c-4976-a8c7-84692637ceff",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}