{
  "annotation_id": "42539eac-f408-4ff5-add5-a8b8af153c51",
  "date_created": "2026-03-02T18:02:23.733000Z",
  "date_modified": "2026-03-02T18:02:23.733000Z",
  "file_hash": "2c4d317a3e00c4ee98d3156103f1b3f20398f3bd919a16d6a73ff3e10376a348",
  "private": false,
  "record": {
    "abstract": "We examine coherent processes in a two-state quantum system that is strongly\ncoupled to a mesoscopic spin bath and weakly coupled to other environmental\ndegrees of freedom. Our analysis is specifically aimed at understanding the\nquantum dynamics of solid-state quantum bits such as electron spins in\nsemiconductor structures and superconducting islands. The role of mesoscopic\ndegrees of freedom with long correlation times (local degrees of freedom such\nas nuclear spins and charge traps) in qubit-related dephasing is discussed in\nterms of a quasi-static bath. A mathemat- ical framework simultaneously\ndescribing coupling to the slow mesoscopic bath and a Markovian environment is\ndeveloped and the dephasing and decoherence properties of the total system are\ninvestigated. The model is applied to several specific examples with direct\nrelevance to current ex- periments. Comparisons to experiments suggests that\nsuch quasi-static degrees of freedom play an important role in current qubit\nimplementations. Several methods of mitigating the bath-induced error are\nconsidered.",
    "arxiv_id": "quant-ph/0512059",
    "authors": [
      "J. M. Taylor",
      "M. D. Lukin"
    ],
    "categories": [
      "quant-ph"
    ],
    "title": "Dephasing of quantum bits by a quasi-static mesoscopic environment",
    "url": "https://arxiv.org/abs/quant-ph/0512059"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "966cc092-5fe4-446d-814e-9f39a5165010",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}