{
  "annotation_id": "8df7c547-3edb-40ae-912d-bbe7281d935b",
  "date_created": "2026-03-02T18:02:24.084000Z",
  "date_modified": "2026-03-02T18:02:24.084000Z",
  "file_hash": "5fe4bf12c3c883c7a7870da64b8be06aa03d87f47e53ac80bf71fd7e55b2e951",
  "private": false,
  "record": {
    "abstract": "We demonstrate an optical-fiber based source of polarization entangled\nphoton-pairs with improved quality and efficiency, which has been integrated\nwith off-the-shelf telecom components and is, therefore, well suited for\nquantum communication applications in the 1550 nm telecom band. Polarization\nentanglement is produced by simultaneously pumping a loop of standard\ndispersion-shifted fiber with two orthogonally-polarized pump pulses, one\npropagating in the clockwise and the other in the counter-clockwise direction.\nWe characterize this source by investigating two-photon interference between\nthe generated signal-idler photon-pairs under various conditions. The\nexperimental parameters are carefully optimized to maximize the generated\nphoton-pair correlation and to minimize contamination of the entangled\nphoton-pairs from extraneously scattered background photons that are produced\nby the pump pulses for two reasons: i) spontaneous Raman scattering causes\nuncorrelated photons to be emitted in the signal/idler bands and ii) broadening\nof the pump-pulse spectrum due to self-phase modulation causes pump photons to\nleak into the signal/idler bands. We obtain two-photon interference with\nvisibility $\u003e90$% without subtracting counts caused by the background photons\n(only dark counts of the detectors are subtracted), when the mean photon number\nin the signal (idler) channel is about 0.02/pulse, while no interference is\nobserved in direct detection of either the signal or the idler photons.",
    "arxiv_id": "quant-ph/0601087",
    "authors": [
      "Xiaoying Li",
      "Chuang Liang",
      "Kim Fook Lee",
      "Jun Chen",
      "Paul L. Voss",
      "Prem Kumar"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.73.052301",
    "journal_ref": "Phy. Rev. A. Vol. 73, 052301 (2006)",
    "title": "An integrable optical-fiber source of polarization entangled   photon-pairs in the telecom band",
    "url": "https://arxiv.org/abs/quant-ph/0601087"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "c8cecb24-f71f-43e4-b7c9-2928d680efe4",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}