{
  "annotation_id": "b09b4c2e-891c-46bf-822a-a2b58808dd8d",
  "date_created": "2026-03-02T18:01:18.501000Z",
  "date_modified": "2026-03-02T18:01:18.501000Z",
  "file_hash": "0c170ad5d4c08dc2ca6212e5f4e8fb1bd2d17dc7b45b1018a48440357efdec0e",
  "private": false,
  "record": {
    "abstract": "We examine how the interference of a coherent light-pulse with its slightly\ntime-delayed copy may generate a pulse nearly identical to the original one and\nahead of it. The simplicity of this 2-pulse system enabled us to obtain exact\nanalytic expressions of the pulse distortion, valid for a wide class of pulse\nshapes. Explicit results are given for the pulses usually considered (gaussian,\nhyperbolic secant) but also for more realistic pulses of strictly limited\nduration. We finally show that the efficiency of the 2-pulse system is\ncomparable to that of the other superluminal systems, at least for the pulse\nadvancements actually demonstrated in the optical experiments.",
    "arxiv_id": "physics/0702195",
    "authors": [
      "Bruno Macke",
      "Bernard S\u00e9gard"
    ],
    "categories": [
      "physics.optics"
    ],
    "doi": "10.1016/j.optcom.2007.09.007",
    "journal_ref": "Optics Communications 281, (2008) 12-17",
    "title": "Two-pulse interference and superluminality",
    "url": "https://arxiv.org/abs/physics/0702195"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "e2460d28-5355-43f6-9f34-595719d12333",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}