{
  "annotation_id": "e2af5937-73bd-4bf6-8824-fa563d63f348",
  "date_created": "2026-03-02T18:02:30.616000Z",
  "date_modified": "2026-03-02T18:02:30.616000Z",
  "file_hash": "35cc73999fccf46c1b598aa76408b10e7d8ef771cf3a7dc71034df185425d04d",
  "private": false,
  "record": {
    "abstract": "We show that, although the amount of mutual entanglement of photons\npropagating in free space is fixed, the type of correlations between the\nphotons that determine the entanglement can dramatically change during\npropagation. We show that this amounts to a migration of entanglement in\nHilbert space, rather than real space. For the case of spontaneous parametric\ndown conversion, the migration of entanglement in transverse coordinates takes\nplace from modulus to phase of the bi-photon state and back again. We propose\nan experiment to observe this migration in Hilbert space and to determine the\nfull entanglement.",
    "arxiv_id": "quant-ph/0608163",
    "authors": [
      "K. W. Chan",
      "J. P. Torres",
      "J. H. Eberly"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.75.050101",
    "title": "Transverse Entanglement Migration in Hilbert Space",
    "url": "https://arxiv.org/abs/quant-ph/0608163"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "a644c91b-bf86-4d5c-8aa7-79cf38eddad6",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}