{
  "annotation_id": "a9b3406b-4052-4015-a99c-fc4557a893f0",
  "date_created": "2026-03-02T18:01:51.840000Z",
  "date_modified": "2026-03-02T18:01:51.840000Z",
  "file_hash": "1f4b358c2ebeeb4a68a915228c110f23cb1d8ae0f4e600d388e90df31972aa9c",
  "private": false,
  "record": {
    "abstract": "We show how to perform a quantum search for a classical object, specifically\nfor a classical object which performs no coherent evolution on the quantum\ncomputer being used for the search. We do so by using interaction free\nmeasurement as a subroutine in a quantum search algorithm. In addition to\nproviding a simple example of how non-unitary processes which approximate\nunitary ones can be useful in a quantum algorithm, our procedure requires only\none photon regardless of the size of the database, thereby establishing an\nupper bound on the amount of energy required to search an arbitrarily large\ndatabase. Alternatively, our result can be interpreted as showing how to\nperform an interaction free measurement with a single photon on an arbitrarily\nlarge number of possible bomb positions simultaneously. We also provide a\nsimple example demonstrating that in terms of the number of database queries,\nthe procedure outlined here can outperform the best classical one.",
    "arxiv_id": "quant-ph/0206066",
    "authors": [
      "Terry Rudolph",
      "Dr.",
      "Lov Grover"
    ],
    "categories": [
      "quant-ph"
    ],
    "title": "Quantum searching a classical database (or how we learned to stop   worrying and love the bomb)",
    "url": "https://arxiv.org/abs/quant-ph/0206066"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "b15c7c7b-1b08-42ab-842f-010b7b4d90f9",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}