{
  "annotation_id": "67261ca3-5f7c-46d1-a0dd-01b382e0ac24",
  "date_created": "2026-03-02T18:02:12.854000Z",
  "date_modified": "2026-03-02T18:02:12.854000Z",
  "file_hash": "29de9f313b1f961bc690309f7a7d9deba69168e5dac13917cdb6dcb74976ec3a",
  "private": false,
  "record": {
    "abstract": "We present the theoretical basis for and experimental verification of\narbitrary single-qubit state generation, using the polarization of photons\ngenerated via spontaneous parametric downconversion. Our precision measurement\nand state reconstruction system has the capability to distinguish over 3\nmillion states, all of which can be reproducibly generated using our state\ncreation apparatus. In order to complete the triumvirate of single qubit\ncontrol, there must be a way to not only manipulate single qubits after\ncreation and before measurement, but a way to characterize the manipulations\n\\emph{themselves}. We present a general representation of arbitrary processes,\nand experimental techniques for generating a variety of single qubit\nmanipulations, including unitary, decohering, and (partially) polarizing\noperations.",
    "arxiv_id": "quant-ph/0502177",
    "authors": [
      "Nicholas Peters",
      "Joseph Altepeter",
      "Evan Jeffrey",
      "David Branning",
      "Paul Kwiat"
    ],
    "categories": [
      "quant-ph"
    ],
    "journal_ref": "Quantum Information Computation v3 p 503 (2003)",
    "title": "Precise Creation, Characterization, and Manipulation of Single Optical   Qubits",
    "url": "https://arxiv.org/abs/quant-ph/0502177"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "e43fdb48-78f5-4e91-b213-ec1d2ccfc2e4",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}