{
  "annotation_id": "fd07d362-e2bb-489f-8abf-2800b5d08b29",
  "date_created": "2026-03-02T18:02:16.729000Z",
  "date_modified": "2026-03-02T18:02:16.729000Z",
  "file_hash": "3ba5a40317c064da775fac27cdb13ea0bbdb6b7ea8df9797e19ce4185fad9450",
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  "record": {
    "abstract": "The problem of estimating the spectrum of a density matrix is considered.\nOther problems, such as bipartite pure state entanglement, can be reduced to\nspectrum estimation. A local operations and classical communication (LOCC)\nmeasurement strategy is shown which is asymptotically optimal. This means that,\nfor a very large number of copies, it becomes unnecessary to perform collective\nmeasurements which should be more difficult to implement in practice.",
    "arxiv_id": "quant-ph/0506197",
    "authors": [
      "Manuel A. Ballester"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1088/0305-4470/39/7/009",
    "journal_ref": "J. Phys. A: Math. Gen. 39 (2006) 1645-1656",
    "title": "Estimating the spectrum of a density matrix with LOCC",
    "url": "https://arxiv.org/abs/quant-ph/0506197"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "c8ad7cfe-2bfb-4efb-8f36-701f38e51677",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}