{
  "annotation_id": "16592c9d-78bf-4378-b626-b61fba98f185",
  "date_created": "2026-03-02T18:02:27.450000Z",
  "date_modified": "2026-03-02T18:02:27.450000Z",
  "file_hash": "055fda94f18cd58949c4b780a9da0afde21f5f501483e68a6814a92c068d8101",
  "private": false,
  "record": {
    "abstract": "In a recent paper Yu and Eberly [Phys. Rev. Lett. {\\bf 93}, 140404 (2004)]\nhave shown that two initially entangled and afterwards not interacting qubits\ncan become completely disentangled in a finite time. We study transient\nentanglement between two qubits coupled collectively to a multimode vacuum\nfield and find an unusual feature that the irreversible spontaneous decay can\nlead to a revival of the entanglement that has already been destroyed. The\nresults show that this feature is independent of the coherent dipole-dipole\ninteraction between the atoms but it depends critically on whether or not the\ncollective damping is present. We show that the ability of the system to\nrevival entanglement via spontaneous emission relies on the presence of very\ndifferent timescales for the evolution of the populations of the collective\nstates and coherence between them.",
    "arxiv_id": "quant-ph/0604053",
    "authors": [
      "Z. Ficek",
      "R. Tanas"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.74.024304",
    "title": "Dark periods and revivals of entanglement in a two qubit system",
    "url": "https://arxiv.org/abs/quant-ph/0604053"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "c2422e3b-5b08-42df-b9ac-abfab18dc631",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}