{
  "annotation_id": "20f69d4d-f286-4e71-b4f9-f1f03e0040ed",
  "date_created": "2026-03-02T18:01:24.167000Z",
  "date_modified": "2026-03-02T18:01:24.167000Z",
  "file_hash": "ffff5b5be29e70fa5e219b8290d9bde09c3334d9ad5491b2dbca61d04756f7fd",
  "private": false,
  "record": {
    "abstract": "We show that the conductance of neutral atoms through a tightly confining\nwaveguide constriction is quantized in units of lambda_dB^2/pi, where lambda_dB\nis the de Broglie wavelength of the incident atoms. Such a constriction forms\nthe atom analogue of an electron quantum point contact and is an example of\nquantum transport of neutral atoms in an aperiodic system. We present a\npractical constriction geometry that can be realized using a microfabricated\nmagnetic waveguide, and discuss how a pair of such constrictions can be used to\nstudy the quantum statistics of weakly interacting gases in small traps.",
    "arxiv_id": "physics/9909020",
    "authors": [
      "J. H. Thywissen",
      "R. M. Westervelt",
      "M. Prentiss"
    ],
    "categories": [
      "physics.atom-ph"
    ],
    "doi": "10.1103/PhysRevLett.83.3762",
    "journal_ref": "Physical Review Letters 83 (19), 3762 (1999)",
    "title": "A quantum point contact for neutral atoms",
    "url": "https://arxiv.org/abs/physics/9909020"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "ddaaddda-4316-454b-b7f5-5feb7e8af47c",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}