{
  "annotation_id": "1f5d42a6-2195-476f-a593-643be8795a15",
  "date_created": "2026-03-02T18:02:13.626000Z",
  "date_modified": "2026-03-02T18:02:13.626000Z",
  "file_hash": "9376e37fbd66a5a33f96756b421bce0f962f2d10f2394611b6305b88ffe80a95",
  "private": false,
  "record": {
    "abstract": "Geometric phase may enable inherently fault-tolerant quantum computation.\nHowever, due to potential decoherence effects, it is important to understand\nhow such phases arise for {\\it mixed} input states. We report the first\nexperiment to measure mixed-state geometric phases in optics, using a\nMach-Zehnder interferometer, and polarization mixed states that are produced in\ntwo different ways: decohering pure states with birefringent elements; and\nproducing a nonmaximally entangled state of two photons and tracing over one of\nthem, a form of remote state preparation.",
    "arxiv_id": "quant-ph/0412216",
    "authors": [
      "Marie Ericsson",
      "Daryl Achilles",
      "Julio T. Barreiro",
      "David Branning",
      "Nicholas A. Peters",
      "Paul G. Kwiat"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevLett.94.050401",
    "journal_ref": "Phys. Rev. Lett. 94, 050401 (2005)",
    "title": "Measurement of geometric phase for mixed states using single photon   interferometry",
    "url": "https://arxiv.org/abs/quant-ph/0412216"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "58dfe9d1-f5b8-46da-b337-ceb66990c173",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}