{
  "annotation_id": "1c416ba0-c0ba-4e94-b059-1d60c7110fa6",
  "date_created": "2026-03-02T18:01:14.981000Z",
  "date_modified": "2026-03-02T18:01:14.981000Z",
  "file_hash": "abcbba45f521bf32a4a80314637c29f1e4c00d7f2c76243b4e565b9624f49518",
  "private": false,
  "record": {
    "abstract": "We demonstrate the ability to coherently control ultracold atomic Rb\ncollisions using frequency-chirped light on the nanosecond time scale. For\ncertain center frequencies of the chirp, the rate of inelastic trap-loss\ncollisions induced by negatively chirped light is dramatically suppressed\ncompared to the case of a positive chirp. We attribute this to a fundamental\nasymmetry in the system: an excited wavepacket always moves inward on the\nattractive molecular potential. For a positive chirp, the resonance condition\nmoves outward in time, while for a negative chirp, it moves inward, in the same\ndirection as the excited wavepacket; this allows multiple interactions between\nthe wavepacket and the light, enabling the wavepacket to be returned coherently\nto the ground state. Classical and quantum calculations support this\ninterpretation.",
    "arxiv_id": "physics/0612071",
    "authors": [
      "M. J. Wright",
      "J. A. Pechkis",
      "J. L. Carini",
      "S. Kallush",
      "R. Kosloff",
      "P. L. Gould"
    ],
    "categories": [
      "physics.atom-ph"
    ],
    "doi": "10.1103/PhysRevA.75.051401",
    "title": "Coherent Control of Ultracold Collisions with Chirped Light: Direction   Matters",
    "url": "https://arxiv.org/abs/physics/0612071"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "d61ad7b1-62ef-4119-8290-85a4204f9de7",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}