{
  "annotation_id": "1b0d3b44-c0b8-49ac-8fd7-9da5976af975",
  "date_created": "2026-03-02T18:02:41.529000Z",
  "date_modified": "2026-03-02T18:02:41.529000Z",
  "file_hash": "28e5022e2879e3ddafafa944f98b24d9533968e08103275fa1b5625aa051a81f",
  "private": false,
  "record": {
    "abstract": "We discuss the unambiguous measurement of quantum nonorthogonal states in\nconnection with the quantum cryptography. We show that checking a ratio of null\none to signal is essential in detecting a certain kind of eavesdropping in the\ncase of two nonorthogonal states quantum cryptography. We prove that it is not\nneeded in the case of the four states quantum cryptography.",
    "arxiv_id": "quant-ph/9702037",
    "authors": [
      "Won Young Hwang",
      "In Gyu Koh",
      "Yeong Deok Han"
    ],
    "categories": [
      "quant-ph"
    ],
    "title": "The quantum cryptography and the unambiguous measurement of quantum   nonorthogonal states",
    "url": "https://arxiv.org/abs/quant-ph/9702037"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "367a087f-1f02-4155-8e5c-39006f2079fd",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}