{
  "annotation_id": "5b32f666-8d99-49a9-83e4-d410f7086d67",
  "date_created": "2026-03-02T18:01:38.148000Z",
  "date_modified": "2026-03-02T18:01:38.148000Z",
  "file_hash": "b2108e5fdd11bd08a20d1b0b0b75f2245e3a6f53871cebacc518a9fe67b4d58b",
  "private": false,
  "record": {
    "abstract": "If a quantum mechanical particle is scattered by a potential well, the wave\nfunction of the particle can propagate with negative phase time. Due to the\nanalogy of the Schr\\\"odinger and the Helmholtz equation this phenomenon is\nexpected to be observable for electromagnetic wave propagation. Experimental\ndata of electromagnetic wells realized by wave guides filled with different\ndielectrics confirm this conjecture now.",
    "arxiv_id": "quant-ph/0006131",
    "authors": [
      "R. -M. Vetter",
      "A. Haibel",
      "G. Nimtz"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevE.63.046701",
    "journal_ref": "Phys. Rev. E 63, 046701 (2001)",
    "title": "Negative phase time for Scattering at Quantum Wells: A Microwave Analogy   Experiment",
    "url": "https://arxiv.org/abs/quant-ph/0006131"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "86de0b94-f06b-430c-a442-6f11901c1b65",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}