{
  "annotation_id": "579d9976-70a1-41f5-bcda-8776c3da98f7",
  "date_created": "2026-03-02T18:01:55.526000Z",
  "date_modified": "2026-03-02T18:01:55.526000Z",
  "file_hash": "78bdee6b68ea3bf5c36ac97fc1712a9c4b020e328a2f21bb5aa535bab4e08081",
  "private": false,
  "record": {
    "abstract": "A new method of quantum state tomography for quantum information processing\nis described. The method based on two-dimensional Fourier transform technique\ninvolves detection of all the off-diagonal elements of the density matrix in a\ntwo-dimensional experiment. All the diagonal elements are detected in another\none-dimensional experiment. The method is efficient and applicable to a wide\nrange of spin systems. The proposed method is explained using a 2 qubit system\nand demonstrated by tomographing arbitrary complex density matrices of 2 and 4\nqubit systems using simulations.",
    "arxiv_id": "quant-ph/0212116",
    "authors": [
      "Ranabir Das",
      "T. S. Mahesh",
      "Anil Kumar"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.67.062304",
    "title": "Efficient Quantum State Tomography for Quantum Information Processing   using a two-dimensional Fourier Transform Technique",
    "url": "https://arxiv.org/abs/quant-ph/0212116"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "b59998d8-af44-4322-ad95-f1df09198fd8",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}